Summary of Contents for Hitachi T7K250 - Deskstar - Hard Drive
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Hard Disk Drive Specification Deskstar T7K250 3.5 inch Ultra ATA/133 hard disk drive 3.5 inch Serial ATA hard disk drive Models: HDT722516DLAT80 HDT722516DLA380 HDT722525DLAT80 HDT722525DLA380 HDT722520DLAT80 HDT722520DLA380 Version 1.8 12 September 2006...
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Hard Disk Drive Specification Deskstar T7K250 3.5 inch Ultra ATA/133 hard disk drive 3.5 inch Serial ATA hard disk drive Models: HDT722516DLAT80 HDT722516DLA380 HDT722525DLAT80 HDT722525DLA380 HDT722520DLAT80 HDT722520DLA380 Version 1.8 12 September 2006...
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It is possible that this publication may contain reference to, or information about, Hitachi products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that Hitachi intends to announce such Hitachi products, programming, or services in your coun- try.
Table Of Contents 1.0 General........................1 1.1 Introduction....................1 1.2 References....................1 1.3 Abbreviations...................1 1.4 Caution.....................3 2.0 General features of the drive ................5 3.0 Fixed-disk subsystem description..............9 3.1 Control electronics ...................9 3.2 Head disk assembly ................9 3.3 Actuator ....................9 4.0 Drive characteristics ..................11 4.1 Default logical drive parameters..............11 4.2 Data sheet....................11 4.3 World Wide Name Assignment ...............12...
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6.6 Out of band signaling (SATA model)............30 6.7 Reset timings....................31 6.8 PIO timings ....................32 6.8.1 Write DRQ interval time..............32 6.8.2 Read DRQ interval time ..............33 6.9 Multi word DMA timings ................34 6.10 Ultra DMA timings ................35 6.10.1 Initiating Read DMA ..............35 6.10.2 Host Pausing Read DMA..............36 6.10.3 Host Terminating Read DMA............37 6.10.4 Device Terminating Read DMA...........38...
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12.37 Seek (7xh) ...................185 12.38 Service (A2h ..................)186 12.39 Set Features (EFh) ................187 12.39.1 Set Transfer mode ...............188 12.39.2 Write Cache ................188 12.39.3 Advanced Power Management ...........188 12.39.4 Automatic Acoustic Management ..........189 12.40 Set Max ADDRESS (F9h) ..............190 12.40.1 Set Max Set Password (Feature=01h).........192 12.40.2 Set Max Lock (Feature=02h)............193 12.40.3 Set Max Unlock (Feature = 03h) ..........194 12.40.4 Set Max Freeze Lock (Feature = 04h) ........195...
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List of Tables Table 1.Mechanical positioning performance ............11 Table 2.Cylinder allocation..................13 Table 3.Command overhead ..................15 Table 4.Mechanical positioning performance ............15 Table 5.Full stroke seek time ..................16 Table 6.Head switch time ..................16 Table 7.Single track seek time ...................17 Table 8.Latency Time ....................17 Table 9.Drive ready time ...................17 Table 10.Data transfer speed ..................18 Table 11.Simple Sequential Access performance............19...
1.0 General 1.1 Introduction This document describes the specifications of the Deskstar T7K250, a 3.5-inch hard disk drive with ATA interface and a rotational speed of 7200 RPM. HDT722516DLAT80 160.0 GB HDT722520DLAT80 200 GB HDT722525DLAT80 250.0 GB HDT722516DLA380 160.0 GB (3Gbps*) HDT722520DLA380 200 GB (3Gbps*) HDT722525DLA380...
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Federal Communications Commission field replacement unit gravity (a unit of force) (32 ft/sec) per Hertz 1,000,000,000 bits 1,000,000,000 bytes ground hexadecimal hard disk drive Hertz Input integrated lead suspension Input/Output International Standards Organization 1,000 bytes Kbpi 1000 bits per inch kgf-cm kilogram (force)-centimeter kilohertz...
read/write second SELV secondary low voltage S.M.A.R.TSelf-Monitoring, Analysis, and Reporting Technology tracks per inch track transistor-transistor logic Underwriters Laboratory volt Verband Deutscher Electrotechniker watt 3-state transistor-transistor tristate logic 1.4 Caution • Do not apply force to the top cover. • Do not cover the breathing hole on the top cover. •...
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Deskstar T7K250 Hard Disk Drive Specification...
2.0 General features of the drive • Formatted capacities of 160 GB, 200 GB, 250 GB • Spindle speeds of 7200 RPM • Fluid Dynamic Bearing motor • Enhanced IDE interface • Sector format of 512 bytes/sector • Closed-loop actuator servo •...
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Deskstar T7K250 Hard Disk Drive Specification...
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Part 1. Functional specification Deskstar T7K250 Hard Disk Drive specification...
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Deskstar T7K250 Hard Disk Drive Specification...
3.0 Fixed-disk subsystem description 3.1 Control electronics The drive is electronically controlled by a microprocessor, several logic modules, digital/analog modules, and var- ious drivers and receivers. The control electronics performs the following major functions: • Controls and interprets all interface signals between the host controller and the drive. •...
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Deskstar T7K250 Hard Disk Drive Specification...
4.0 Drive characteristics 4.1 Default logical drive parameters HDT722516DLxxxx HDT722525DLxxxx HDT722520DLxxxx Physical Layout Label capacity (GB) Bytes per sector Sectors per track 594-1242 630-1296 594-1242 Number of heads Number of disks Data sectors per cylinder 1782-3726 2520-5184 2376-4968 Data cylinders per zone 601-7060 1810-8341 500-6500...
4.4 Drive organization 4.4.1 Drive format Upon shipment from manufacturing the drive satisfies the sector continuity in the physical format by means of the defect flagging strategy described in Section 5.0, “Defect flagging strategy” on page 21 in order to provide the maximum performance to users.
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This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for reassigned data. Spare cylinder The spare cylinder is used by Hitachi Global Storage Technologies manufacturing and includes data sent from a defect location. Deskstar T7K250 Hard Disk Drive Specification...
4.5 Performance characteristics Drive performance is characterized by the following parameters: • Command overhead • Mechanical head positioning Seek time Latency • Data transfer speed • Buffering operation (Look ahead/Write cache) All the above parameters contribute to drive performance. There are other parameters that contribute to the perfor- mance of the actual system.
The terms “Typical” and “Max” are used throughout this document and are defined as follows: Typical The average of the drive population tested at nominal environmental and voltage conditions. Maximum value measured on any one drive over the full range of the environmental and voltage conditions.
4.5.2.4 Cylinder switch time (cylinder skew) Cylinder switch time is defined as the amount of time required by the fixed disk to access the next sequential block after reading the last sector in the current cylinder. The measuring method is given in Section 4.5.5, “Throughput” on page 19. 4.5.2.5 Single track seek time (without command overhead, including settling) Table 7: Single track seek time Function...
4.5.5 Throughput 4.5.5.1 Simple sequential access The following table illustrates simple sequential access for the three-disk enclosure. Table 11: Simple Sequential Access performance Operation Typical (sec) Max (sec) Sequential Read (Zone 0) 0.28 0.29 Sequential Read (Zone 29) 0.55 0.58 The above table gives the time required to read a total of 8000h consecutive blocks (16,777,216 bytes) accessed by 128 read commands.
E = Buffer-host transfer rate (byte/s) 4.5.6 Operating modes 4.5.6.1 Description of operating modes Table 13: Description of operating modes Operating mode Description Start up time period from spindle stop or power down. Spin-up Seek operation mode Seek Write operation mode Write Read operation mode Read...
5.0 Defect flagging strategy Media defects are remapped to the next available sector during the Format Process in manufacturing. The mapping from LBA to the physical locations is calculated by an internally maintained table. Shipped format • Data areas are optimally used. •...
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Deskstar T7K250 Hard Disk Drive Specification...
6.0 Electrical interface specification 6.1 Connector location Refer to the following illustration to see the location of the connectors Deskstar T7K250 Hard Disk Drive Specification...
6.1.1 DC power connector The DC power connector is designed to mate with AMP part number 1-480424-0 using AMP pins part number 350078-4 (strip), part number 61173-4 (loose piece), or their equivalents. Pin assignments are shown in the figure below. Voltage +12 V 6.1.2 AT signal connector...
6.2 Signal definitions(PATA model) The pin assignments of interface signals are listed as follows: Table 16: Signal definitions SIGNAL Type SIGNAL Type RESET- 3–state DD08 3–state 3–state DD09 3–state 3–state DD10 3–state 3–state DD11 3–state 3–state DD12 3–state 3–state DD13 3–state 3–state DD14...
6.3 Signal descriptions Table 17: Special signal definitions for Ultra DMA Special Definition Conventional (for Ultra DMA) Definition DDMARDY- IORDY Write Operation HSTROBE DIOR- STOP DIOW- HDMARDY- DIOR- Read Operation DSTROBE IORDY STOP DIOW- DD00–DD15 A 16-bit bi-directional data bus between the host and the drive. The lower 8 lines, DD00-07, are used for Regis- ter and ECC access.
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DASP- This is a time-multiplexed signal which indicates that a drive is active or that device 1 is present. This signal is driven by an Open-Drain driver and internally pulled up to 5 volts through a 10 kW resistor. During a Power-On initialization or after RESET- is negated, DASP- shall be asserted by Device 1 within 400 ms to indicate that device 1 is present.
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DMACK- This signal shall be used by the host in response to DMARQ to either acknowledge that data has been accepted, or that data is available. This signal is internally pulled up to 5 Volt through a 15kΩ resistor with a resistor tolerance value of –50% to +100%.
6.4 Interface logic signal levels(PATA model) The interface logic signals have the following electrical specifications: Input High Voltage 2.0 V min Inputs Input Low Voltage –0.8 V max. Output High Voltage 2.4 V min. Outputs: Output Low Voltage 0.5 V max. 6.5 Signal definition (SATA model) SATA has receivers and drivers to be connected to Tx+/- and Rx+/-.
6.5.1 TX+ / TX- These signal are the outbound high-speed differrential signals that are connected to the serial ATA cable. 6.5.2 RX+ / RX- These signals are the inbound high-speed differential signals that are connected to the serial ATA cable. The fol- lowing standard shall be referenced about signal specifications.
6.7 Reset timings Table 18: System reset timing chart Table 19: System reset timing PARAMETER DESCRIPTION Min (µs) Max (µs) RESET low width RESET high to not BUSY Deskstar T7K250 Hard Disk Drive Specification...
6.8 PIO timings The PIO cycle timings meet Mode 4 of the ATA/ATAPI-6 description. CS(1:0)- DA(2:0) DIOR-, DIOW - W rite data DD(15:0) Read data DD(15:0) t7(*) t8(*) IOCS16-(*) IORDY (*) Up to ATA-2 (mode-0,1,2) PARAMETER DESCRIPTION MIN (ns) MAX (ns) Cycle time –...
6.8.2 Read DRQ interval time For read sectors and read multiple operations the interval from the end of negation of the DRQ bit until setting of the next DRQ bit is as follows: • In the event that a host reads the status register only before the sector or block transfer DRQ interval, the DRQ interval 4.2 µs •...
6.9 Multi word DMA timings The Multiword DMA timings meet Mode 2 of the ATA/ATAPI-6 description. CS0-/CS1- tLR/tLW DMARQ DMACK- tKR/tKW DIOR-/DIOW- READ DATA WRITE DATA PARAMETER DESCRIPTION MIN (ns) MAX (ns) Cycle time – DIOR-/DIOW- asserted pulse width – DIOR- data access –...
6.11 Addressing of registers The host addresses the drive through a set of registers called a Task File. These registers are mapped into the host's I/O space. Two chip select lines (CS0– and CS1–) and three address lines (DA0–2) are used to select one of these registers, while a DIOR–...
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Deskstar T7K250 Hard Disk Drive Specification...
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Part 2. Interface specification Deskstar T7K250 Hard Disk Drive Specification...
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Deskstar T7K250 Hard Disk Drive Specification...
7.0 Specification 7.1 Jumper settings 7.1.1 Jumper pin location Jum per pins 7.1.2 Jumper pin identification Pin I Pin A DERA001.prz Pin B Deskstar T7K250 Hard Disk Drive Specification...
7.1.3 Jumper pin assignment There are four jumper settings as shown in the following sections: • 16 logical head default (normal use) • 15logical head default • 32 GB clip • Power up in standby Within each of these four jumper settings the pin assignment selects Device 0, Device 1, Cable Selection, or Device 1 Slave Present as shown in the following figures.
2. In CSEL mode, installing or removing the jumper blocks at A-B or C-D position does not affect any selec- tion of Device or Cable Selection mode. 3. The shipping default position is the Device 0 position. 7.1.4.2 15 logical head default The figure below shows the jumper positions used to select Device 0, Device 1, Cable Selection, or Device1 (Slave) Present setting 15 logical heads instead of default 16 logical head models.
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7.1.4.3 Capacity clip to 32GB The figure below shows the jumper positions used to select Device 0, Device 1, Cable Selection, or Device1 (Slave) Present while setting the drive capacity down to 32 GB for the purpose of compatibility. DEVICE 0 (M aster) DEVICE 1 (Slave)
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Notes: 1. These jumper settings are used for limiting power supply current when multiple drives are used. 2. Command to spin up is SET FEATURES (subcommand 07h). Refer to 12.28 Set Features. 3. To enable the CSEL mode (Cable Selection mode) the jumper block must be installed at E-F. In the CSEL mode the drive address is determined by AT interface signal #28 CSEL as follows: •...
7.2 Environment 7.2.1 Temperature and humidity Table 35: Temperature and humidity Operating conditions Temperature 5C to 55ºC (See note below) Relative humidity 8 to 90%, non-condensing Maximum wet bulb temperature 29.4ºC, non-condensing Maximum temperature gradient 15ºC/hour Altitude –300 to 3,048 m Non-operating conditions Temperature –40C to 65ºC...
1 0 0 3 6 ' C / 9 5 % W e t B u i b = 3 5 . 0 ' C 3 1 ' C / 9 0 % W e t B u i b = 2 9 . 4 ' C N o n - o p e r a t i n g O p e r a t i n g 6 5 ' C / 1 4 %...
7.3.2 Power supply current (typical) Table 37: Power supply current of xxx-GB models Power supply current of +5 Volts (mA) +12 Volts (mA) Total (W) 160 GB-250 GB model Pop mean Pop mean Std dev (PATA models) Idle average 5.24 Idle ripple (peak-to-peak) Low RPM idle 2.72...
Power supply current of 160 +5 Volts (mA) +12 Volts (mA) Total (W) GB and 250 GB model Pop mean Pop mean Std dev (SATA models) Silent R/W average 1450 1000 Silent R/W peak Start up (max) 1200 1880 Standby average 1.93 Sleep average 1.68...
7.4 Reliability 7.4.1 Data integrity No more than one sector is lost at Power loss condition during the write operation when the write cache option is disabled. If the write cache option is active, the data in write cache will be lost. To prevent the loss of customer data, it is recommended that the last write access before power off be issued after setting the write cache off.
7.5 Mechanical specifications 7.5.1 Physical dimensions and weight All dimensions in the above figure are in millimeters. The breather hole must be kept uncovered in order to keep the air pressure inside of the disk enclosure equal to external air pressure. Deskstar T7K250 Hard Disk Drive Specification...
The following table lists the dimensions of the drive. Table 39: Physical dimensions and weight Height [mm] 25.4±0.4 Width [mm] 101.6±0.4 Length [mm] 146.0±0.6 Weight [grams - maximum] 7.5.2 Mounting hole locations The mounting hole locations and size of the drive are shown below. All dimensions are in mm. Thread 6-32 UNC 41.28±0.5...
7.5.3 Connector locations 7.5.4 Drive mounting The drive will operate in all axes (6 directions). Performance and error rate will stay within specification limits if the drive is operated in the other orientations from which it was formatted. For reliable operation, the drive must be mounted in the system securely enough to prevent excessive motion or vibration of the drive during seek operation or spindle rotation, using appropriate screws or equivalent mounting hardware.
The recommended mounting screw torque is 0.6 - 1.0 Nm (6-10 Kgf.cm). The recommended mounting screw depth is 4 mm maximum for bottom and 4.5 mm maximum for horizontal mounting. Drive level vibration test and shock test are to be conducted with the drive mounted to the table using the bottom four screws.
7.6 Vibration and shock All vibration and shock measurements recorded in this section are made with a drive that has no mounting attach- ments for the systems. The input power for the measurements is applied to the normal drive mounting points. 7.6.1 Operating vibration 7.6.1.1 Random vibration The test is 30 minutes of random vibration using the power spectral density (PSD) levels shown below in each of...
The overall RMS (root mean square) level of vibration is 1.04 G. 7.6.2.2 Swept sine vibration • 2 G (zero-to-peak), 5 to 500 to 5 Hz sine wave • 0.5 oct/min sweep rate • 3 minutes dwell at two major resonances 7.6.3 Operating shock The drive meets the following criteria while operating in the conditions described below.
7.6.4.2 Sinusoidal shock wave The shape is approximately half-sine pulse. The figure below shows the maximum acceleration level and duration. Table 42: Sinusoidal shock wave Acceleration level (G) Duration (ms) 7.6.5 Nonoperating rotational shock All shock inputs shall be applied around the actuator pivot axis. Table 43: Rotational shock Duration Rad/sec...
7.8 Identification labels The following labels are affixed to every drive: • A label containing the Hitachi logo, the Hitachi Global Storage Technologies part number and the statement " Made by Hitachi Global Storage Technologies Inc." or Hitachi Global Storage Technol- ogies approved equivalent.
United Nations Environment Program Montreal Protocol, and as ratified by the member nations. Material to be controlled include CFC-11, CFC-12, CFC-113, CFC-114, CFC-115, Halon 1211, Halon 1301 and Halon 2402. Although not specified by the Protocol, CFC-112 is also controlled. In addition to the Protocol Hitachi Global Stor- age Technologies requires the following: •...
The product is declared to be in conformity with requirements of the following EC directives under the sole responsibility of Hitachi Global Storage Technologies Japan Ltd: Council Directive 89/336/EEC on the approximation of laws of the Member States relating to electromagnetic compatibility.
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Deskstar T7K250 Hard Disk Drive Specification...
8.0 General 8.1 Introduction This specification describes the host interface of the Deskstar T7K250 hard disk drive. The interface conforms to the Working Document of Information technology, AT Attachment with Packet Interface Extension (ATA/ATAPI-6) Revision 3b, dated 26 February 2002, with certain limitations described in Section 8.3 below.
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Deskstar T7K250 Hard Disk Drive Specification...
9.0 Registers 9.1 Register set Table 46: Register Set Addresses Functions CS0- CS1- READ (DIOR-) WRITE (DIOW-) Data bus high impedance Not used Control block registers Data bus high impedance Not used Data bus high impedance Not used Alternate Status Device Control Device Address Not used...
9.2 Alternate Status Register Table 47: Alternate Status Register DSC/ SERV This register contains the same information as the Status Register. The only difference between this register and the Status Register is that reading the Alternate Status Register does not imply an interrupt acknowledge or a clear of a pending interrupt.
9.6 Data Register This register is used to transfer data blocks between the device data buffer and the host. It is also the register through which sector information is transferred on a Format Track command and the configuration information is transferred on an Identify Device command.
9.8 Drive Address Register Table 49: Drive Address Register -WTG -DS1 -DS0 This register contains the inverted drive select and head select addresses of the currently selected drive. Definitions High Impedance. This bit is not a device and will always be in a high impedance state. -WTG Write Gate.
9.10 Error Register Table 51: Error Register IDNF ABRT TK0NF AMNF This register contains the status from the last command executed by the device or a diagnostic code. At the comple- tion of any command, except Execute Device Diagnostic, the contents of this register are always valid even if ERR = 0 is in the Status Register.
9.13 Sector Number Register This register contains the starting sector number for any disk data access for the subsequent command. The sector number is from one to the maximum number of sectors per track. In LBA mode, this register contains Bits 0–7. At the end of the command this register is updated to reflect the cur- rent LBA Bits 0–7.
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Definitions Busy. Bit BSY=1 whenever the device is accessing the registers. The host should not read or write any registers when BSY=1. If the host reads any register when BSY=1, the contents of the Status Register will be returned. DRDY Device Ready.
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Deskstar T7K250 Hard Disk Drive Specification...
10.0 General operation 10.1 Reset response ATA has the following three types of resets: The device executes a series of electrical circuitry diagnostics, spins up the Power On Reset (POR) head disk assembly, tests speed and other mechanical parametric, and sets default values.
10.2 Register initialization After a power on, a hard reset, or a software reset, the register values are initialized as shown in the table below. Table 54: Default Register Values Register Default Value Error Diagnostic Code Sector Count Sector Number Cylinder Low Cylinder High Device/Head...
10.3 Diagnostic and Reset considerations For each Reset and Execute Device Diagnostic, the diagnostic is done as follows: Power On Reset DASP– is read by Device 0 to determine if Device 1 is present. If Device 1 is present, Device 0 shall read PDIAG– to determine when it is valid to clear the BSY bit and whether Device 1 has powered on or reset without error, otherwise Device 0 clears the BSY bit whenever it is ready to accept commands.
10.4 Sector Addressing Mode All addressing of data sectors recorded on the device's media is done by a logical sector address. The logical CHS address for the Deskstar T7K250 is different from the actual physical CHS location of the data sector on the disk media.
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The only commands that may be overlapped are NOP (with 01h subcommand code) (’00’h) Read DMA Queued (’C7’h) Service (’A2’h) Write DMA Queued (’CC’h) For the READ DMA QUEUED and WRITE DMA QUEUED commands, the device may or may not perform a bus release.
10.6 Power management features The power management feature set permits a host to modify the behavior in a manner which reduces the power required to operate. The power management feature set provides a set of commands and a timer that enables a device to implement low power consumption modes.
10.6.4 Interface capability for power modes Each power mode affects the physical interface as defined in the following table: Table 57: Power conditions Mode Interface active Media Active Active Idle Active Standby Inactive Sleep Inactive Ready (RDY) is not a power condition. A device may post ready at the interface even though the media may not be accessible.
10.7 S.M.A.R.T. Function The intent of Self-monitoring, analysis, and reporting technology (S.M.A.R.T.) is to protect user data and prevent unscheduled system downtime that may be caused by predictable degradation and/or fault of the device. By monitoring and storing critical performance and calibration parameters, S.M.A.R.T. devices employ sophisticated data analysis algorithms to predict the likelihood of near-term degradation or fault condition.
10.7.7 Error log Logging of reported errors is supported. The device provides information on the last five errors that the device reported as described in the SMART error log sector. The device may also provide additional vendor specific information on these reported errors. The error log is not disabled when SMART is disabled. Disabling SMART disables the delivering of error log information via the SMART READ LOG SECTOR command.
10.8 Security Mode Feature Set Security Mode Feature Set is a powerful security feature. With a device lock password, a user can prevent unauthorized access to a device even if it is removed from the computer. New commands are supported for this feature as listed below: Security Set Password ('F1'h) Security Unlock...
10.8.3 Passwords This function can have two types of passwords as described below. Master Password When the Master Password is set, the device does NOT enable the Device Lock Function, and the device CANNOT be locked with the Master Password, but the Master Password can be used for unlocking the locked device.
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10.8.4.3 Operation from POR after user password is set When Device Lock Function is enabled, the device rejects media access command until a Security Unlock command is successfully completed. Device Locked mode Unlock CMD Erase Prepare Media Access Non-media Access Command (*1) Command (*1) Erase Unit...
10.8.4.4 User Password lost If the User Password is forgotten and High level security is set, the system user cannot access any data. However the device can be unlocked using the Master Password. If a system user forgets the User Password and Maximum security level is set, data access is impossible. However the device can be unlocked using the Security Erase Unit command to unlock the device and erase all user data with the Master Password.
10.8.5 Command table This table shows the device's response to commands when the Security Mode Feature Set (Device lock function) is enabled. Table 58: Command table for device lock operation Device Mode Device Mode Command Command Locked Unlocked Frozen Locked Unlocked Frozen Check Power Mode...
10.9 Host Protected Area Feature Host Protected Area Feature provides a protected area which cannot be accessed via conventional methods. This protected area is used to contain critical system data such as BIOS or system management information. The contents of the main memory of the entire system may also be dumped into the protected area to resume after a system power off.
3. Conventional usage without system software support Since the drive works as a 6.2 GB device, there is no special care required for normal use of this device. 4. Advanced usage using protected area The data in the protected area is accessed by the following steps. i.
10.10 Seek overlap The Deskstar T7K250 provides an accurate method for measuring seek time. The seek command is usually used to measure the device seek time by accumulating the execution time for a number of seek commands. With typical implementation of seek command this measurement must include the device and host command overhead. To eliminate this overhead the drive overlaps the seek command as described below.
10.11 Write cache function Write cache is a performance enhancement whereby the device reports the completion of the write command (Write Sectors, Write Multiple, and Write DMA) to the host as soon as the device has received all of the data into its buffer. The device assumes the responsibility for subsequently writing the data onto the disk.
10.12 Reassign function The Reassign function is used with read commands and write commands. The sectors of data for reassignment are prepared as the spare data sector. This reassignment information is registered internally and the information is available right after completing the Reassign function.
10.13 Power-Up in Standby feature set The Power-Up In Standby feature set allows devices to be powered-up into the Standby power management state to minimize inrush current at power-up and to allow the host to sequence the spin-up of devices. This feature set will be enabled and disabled via the SET FEATURES command or the use of a jumper.
10.14 Advanced Power Management feature set (APM) This feature allows the host to select an advanced power management level. The advanced power management level is a scale from the lowest power consumption setting of 01h to the maximum performance level of FEh. Device performance may increase with increasing advanced power management levels.
10.15 Automatic Acoustic Management feature set (AAM) This feature set allows the host to select an acoustic management level. The acoustic management level ranges from the setting of 80h to FEh. Device performance and acoustic emanation may increase with increasing acoustic management levels.
10.16 Address Offset Feature Computer systems perform initial code loading (booting) by reading from a predefined address on a drive. To allow an alternate bootable operating system to exist in a system reserved area on a drive, this feature provides a Set Features function to temporarily offset the drive address space.
10.16.2 Identify Device Data Identify Device data, word 83, bit 7 indicates the device supports the Address Offset Feature. Identify Device data, word 86, bit 7 indicates the device is in Address Offset mode. 10.16.3 Exceptions in Address Offset Mode Any commands which access sectors across the original native maximum LBA are rejected with error, even if the access protection is removed by a Set Max Address command.
10.17 48-bit Address Feature Set The 48-bit Address feature set allows devices with capacities up to 281,474,976,710,655 sectors. This allows device capacity up to 144,115,188,075,855,360 bytes. In addition, the number of sectors that may be transferred by a single command are increased by increasing the allowable sector count to 16 bits. Commands unique to the 48-bit Address feature set are •...
• Write Stream PIO • Read Stream DMA • Write Stream DMA • Read Log Ext Support of the Streaming feature set is indicated in Identify Device work 84 bit 4. Note that PIO versions of these commands limit the transfer rate (16.6 MB/s), provide no CRC protection, and limit status reporting as compared to a DMA implementation.
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10.18.1.4 Read Continuous bit If the Read Continuous bit is set to one for the command, the device shall transfer the requested amount of data to the host within the Command Completion Time Limit even if an error occurs. The data sent to the host by the device in an error condition is vendor specific.
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Deskstar T7K250 Hard Disk Drive Specification...
11.0 Command protocol The commands are grouped into different classes according to the protocols followed for command execution. The command classes with their associated protocols are defined below. For all commands, the host must first check to see if BSY = 1, and should proceed no further unless and until BSY = 0.
e. The host reads one sector (or block) of data via the Data Register. f. The device sets DRQ = 0 after the sector (or block) has been transferred to the host. 4. For the Read Long command: a. The device sets BSY = 1 and prepares for data transfer. b.
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• Write Multiple Ext • Write Sector(s) • Write Sector(s) Ext Execution includes the transfer of one or more 512 byte (> 512 bytes on Write Long) sectors of data from the host to the device. 1. The host writes any required parameters to the Features, Sector Count, Sector Number, Cylinder, and Device/Head Registers.
11.4 DMA commands The following are DMA commands: • Read DMA • Read DMA Ext • Write DMA • Write DMA Data transfers using DMA commands differ in two ways from PIO transfers: • Data transfers are performed using the Slave DMA channel •...
12.0 Command descriptions The table below shows the commands that are supported by the device. Table 61: “Command Set (subcommand)” on page 115 shows the subcommands that are supported by each command or feature. Table 59: Command Set (1 of 2) Code Binary Code Bit Protocol...
2 : PIO data OUT command 3 : Non data command 4 : DMA command Table 61: Command Set (subcommand) Command Feature Command (Subcommand) Code (Hex) Register (Hex) S.M.A.R.T. Function S.M.A.R.T. Read Attribute Values S.M.A.R.T. Read Attribute Thresholds S.M.A.R.T. Enable/Disable Attribute Autosave S.M.A.R.T.
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The following symbols are used in the command descriptions. Output registers This indicates that the bit must be set to 0. This indicates that the bit must be set to 1. The device number bit. Indicates that the device number bit of the Device/Head Register should be specified. Zero selects the master device and one selects the slave device.
12.2.3 DEVICE CONFIGURATION IDENTIFY (subcommand C2h) The DEVICE CONFIGURATION IDENTIFY command returns a 512 byte data structure via PIO data-in transfer. The content of this data structure indicates the selectable commands, modes, and feature sets that the device is capable of supporting. If a DEVICE CONFIGURATION SET command has been issued reducing the capabilities, the response to an IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command will reflect the reduced set of capabilities, while the DEVICE CONFIGURATION IDENTIFY command will reflect the entire set of selectable capabilities.
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Table 65: Device Configuration Overlay Data structure Word Content 0001h Data Structure revision Multiword DMA modes supported 15-3 Reserved 1 = Multiword DMA mode 2 and below are supported 1 = Multiword DMA mode 1 and below are supported 1 = Multiword DMA mode 0 is supported Ultra DMA modes supported 15-6 Reserved...
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Table 66: DCO error information definition Cylinder high invalid word location Cylinder low invalid bit location (bits 7:0) Sector Number Invalid bit location (bits 15:8) error reason code description DCO feature is frozen Device is now Security Locked mode Device's feature is already modified with DCO User attempt to disable any feature enabled Sector count Device is now SET MAX Locked or Frozen mode...
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Table 73: Identify device information (Part 1 of 7) An asterisk (*) in next to the Content field indicates the use of those parameters that are vendor specific. Word Content Description 045AH or drive classi- bit assignments 045Eh fication 15(=0) 1=ATAPI device, 0=ATA device 14 - 8 retired...
Table 74: Identify device information (Part 2 of 7) An asterisk (*) in next to the Content field indicates the use of those parameters that are vendor specific Word Content Description 0000H Reserved XF00H Capabilities, bit assignments: 15-14(=0) Reserved Standby timer (=1) Values as specified in ATA standard are supported (=0)
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Table 75: Identify device information (Part 3 of 7) Word Content Description 0003H Flow Control PIO Transfer Modes Supported 15- 8(=0) Reserved 7- 0(=3) Advanced PIO Transfer Modes Supported '11' = PIO Mode 3 and 4 Supported 0078H Minimum Multiword DMA Transfer Cycle Time Per Word 15- 0(=78h) Cycle time in nanoseconds (120 ns, 16.6 MB/s) 0078H Manufacturer's Recommended Multiword DMA Transfer Cycle Time...
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007CH Major version number 15- 0 (=7C) ATA-2,ATA-3,ATA/ATAPI-4,ATA/ATAPI-5,ATA/ATAPI-6 0019H Minor version number 15- 0 (=19) ATA/ATAPI-6 T13 14100 Revision 3a 74EBH Command set supported 15(=0) Reserved 14(=1) NOP command 13(=1) READ BUFFER command 12(=1) WRITE BUFFER command 11(=0) Reserved 10(=1) Host Protected Feature set 9(=0) DEVICE RESET command...
Table 77: Identify device information (Part 5 of 7 Word Content Description XXXXH Command set supported 15-14 Reserved FLUSH CACHE EXT command supported FLUSH CACHE command supported Device Configuration Overlay command supported 48-bit Address Feature Set supported Automatic Acoustic Management enabled SET Max Security extension enabled Set Features Address Offset Feature mode Set Features subcommand required to spin-up after...
Table 78: Identify device information (Part 6 of 7) Word Content Description XXXXH Hardware reset result. Bit assignments 15-14 (=01) Word 93 is valid CBLID- status 1=above Vih 0=below Vil 12- 8 Device 1 hardware reset result Device 0 clear these bits to 0 Reserved PDIAG- assertion 1 = asset 0 = not assert...
Table 79: Identify device information (Part 7 of 7) An asterisk (*) in next to the Content field indicates the use of those parameters that are vendor specific Word Content Description XXXXH * Current Set Feature Option. Bit assignments 15-4 Reserve Auto reassign 1= enabled...
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In LBA mode this register contains the current LBA bits 0–7. (L = 1) Cylinder High/Low This indicates the cylinder number of the last transferred sector. (L = 0). In LBA mode this register contains the current LBA bits 8–15 (Low) and bits16–23 (High).
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Cylinder High Previous LBA (47:40) Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24)of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8)of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32)of the address of the first unrecoverable error.
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Input parameters from the device on command complete Sector Count Bits 7 - 3 (Tag) contain the Tag of the completed command. Bit 2 (REL) is cleared to zero. Bit 1 (I/O) is set to one. Bit 0 (C/D) is set to one. Sector Number, Cylinder High/Low, H Sector address of unrecoverable error (applicable only when an unrecoverable error has occurred.) Cleared to zero...
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Input parameters from the device on bus release Sector Count (HOB=0) Bits 7 - 3 (Tag) contain the Tag of the completed command. Bit 2 (REL) is cleared to zero. Bit 1 (I/O) is set to one. Bit 0 (C/D) is set to one. Sector Number, Cylinder High/Low n/a Cleared to zero when the device performs a bus release.
12.18.2 Extended Comprehensive SMART Error Log The figure below defines the format of each of the sectors that comprise the Extended Comprehensive SMART error log. Error log data structure shall not include errors attributed to the receipt of faulty commands such as com- mand codes not implemented by the device or requests with invalid parameters or in valid addresses.
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12.18.2.3.2 Data format of command data structure Table 94: Command data structure Description Bytes Offset Device Control register Features register (7:0) (see Note) Features register (15:8) Sector count register(7:0) Sector count register(15:8) Sector number register(7:0) Sector number register(15:8) Cylinder Low register (7:0) Cylinder Low register (15:8) Cylinder High register (7:0) Cylinder High register (15:8)
Note: bits (7:0) refer to the contents if the register is read with bit 7 of the Device Control register cleared to zero. Bits (15:8) refer to the contents if the register is read with bit 7 of the Device Control register set to one. State shall contain a value indicating the state of the device when the command was issued to the device or the reset occurred as described below.
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12.18.3.1 Self-test log data structure revision number The value of this revision number shall be 01h. 12.18.3.2 Self-test descriptor index This indicates the most recent self-test descriptor. If there have been no self-tests, this is set to zero. Valid values for the Self-test descriptor index are 0 to 18.
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In LBA mode, this register contains current LBA bits 0–7. (L = 1) Cylinder High/Low This indicates the cylinder number of the transferred sector. (L = 0) In LBA mode, this register contains current LBA bits 8–15 (Low), 16–23 (High). (L = 1) This indicates the head number of the transferred sector.
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This indicates the head number of the transferred sector. (L = 0) In LBA mode, this register contains current LBA bits 24–27. (L = 1) Deskstar T7K250 Hard Disk Drive Specification...
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Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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Cylinder High/Low This is the cylinder number of the last transferred sector. (L = 0) In LBA mode this register contains the current LBA bits 8–15 (Low) and bits 16–23 (High). (L = 1) This is the head number of the last transferred sector. (L = 0) In LBA mode this register contains the current LBA bits 24–27.
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Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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URG (bit 7) URG specifies an urgent transfter request. The Urgent bit specifies that the command should be completed in the minimum possible time by the device and shall be completed within the specified Command Completion Time Limit. RC(bit 6) RC specifies Read Continuous mode enabled.
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Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=1)LBA (39:32) of the address of the first unrecoverable error. Cylinder Low (HOB=0)LBA (23:16) of the address of the first unrecoverable error. Cylinder High (HOB=0) LBA (23:16) of the address of the first unrecoverable error. Cylinder High (HOB=1) LBA (47:40) of the address of the first unrecoverable error.
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URG (bit 7) URG specifies an urgent transfter request. The Urgent bit specifies that the command should be completed in the minimum possible time by the device and shall be completed within the specified Command Completion Time Limit. RC(bit 6) RC specifies Read Continuous mode enabled.
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Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=1)LBA (39:32) of the address of the first unrecoverable error. Cylinder Low (HOB=0)LBA (23:16) of the address of the first unrecoverable error. Cylinder High (HOB=0) LBA (23:16) of the address of the first unrecoverable error. Cylinder High (HOB=1) LBA (47:40) of the address of the first unrecoverable error.
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In LBA mode this register contains the current LBA bits 8–15 (Low) and bits 16–23 (High). (L = 1) This is the head number of the last transferred sector. (L = 0) In LBA mode this register contains the current LBA bits 24–27. (L = 1) Deskstar T7K250 Hard Disk Drive Specification...
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Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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If the device receives a Security Erase Unit command without a prior Security Erase Prepare command the device aborts the security erase unit command. This command disables the security mode feature (device lock function), however, the master password is still stored internally within the device and may be reactivated later when a new user password is set.
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Security Level Zero indicates High level. One indicates Maximum level. If the host sets High level and the password is forgotten, the Master Password can be used to unlock the device. If the host sets Maximum level and the user password is for- gotten, only a Security Erase Prepare/Security Unit command can unlock the device and all data will be lost.
Note: After the power on reset or hard reset the device is set to the following features as default. Write cache Enable ECC bytes 4 bytes Read look-ahead Enable Reverting to power on defaults Disable Release interrupt Disable 12.39.1 Set Transfer mode When the Feature register is 03h (= Set Transfer mode) the Sector Count Register specifies the transfer mechanism.
120 ☯y ☯435 [sec] (default: 120 [sec]) = (x − 40h) 60 +600 (600 ☯y ☯4380) [sec] When Low RPM standby mode is the deepest Power Saving Mode and the value in Sector Count register is between 01h and 3Fh, where 120 ☯y ☯435...
12.40 Set Max ADDRESS (F9h) Table 118: Set Max ADDRESS command (F9h) Command Block Output Registers Command Block Input Registers Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0 Data - - - - - - - - Data - - - - - - - - Feature...
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If a host protected area has been established by a Set Max Address Ext command, the device shall return command aborted. Output parameters to the device Option bit for selection whether nonvolatile or volatile. B = 0 is volatile condition. When B=1, MAX LBA/CYL which is set by Set Max LBA/CYL command is preserved by POR.
12.41 Set Max Address Ext (37h) Table 124: Set Max Address Ext command (37h) Command Block Output Registers Command Block Input Registers Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0 Data Low - - - - - - - - Data Low...
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Output parameters to the device Option bit for selection whether nonvolatile or volatile. B=0 is volatile condition. When B=1, MAX Address which is set by the Set Max Address Ext command is pre- served by POR. When B=0, MAX Address which is set by the Set Max Address Ext com- mand will be lost by POR.
12.43 S.M.A.R.T. Function Set (B0h) Table 126: S.M.A.R.T. Function Set command (B0h) Command Block Output Registers Command Block Input Registers Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0 Data - - - - - - - - Data - - - - - - - - Feature...
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12.43.1.2 S.M.A.R.T. Read Attribute Thresholds (subcommand D1h) This subcommand returns the Attribute Thresholds of the device to the host. Upon receipt of the SMART Read Attribute Thresholds subcommand from the host, the device reads the Attribute Thresholds from the Attribute Threshold sectors and then transfers the 512 bytes of Attribute Thresholds information to the host.
host within two seconds after receipt of the new command. After servicing the interrupting command, the device will resume its routine automatically or not start its routine depending on the interrupting command. Captive mode: When executing self-test in captive mode, the device sets BSY to one and executes the specified self-test routine after receipt of the command.
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Upon receipt of the S.M.A.R.T. Disable Operations subcommand from the host, the device asserts BSY, disables S.M.A.R.T. capabilities and functions, clears BSY, and asserts INTRQ. After receipt of the device of the S.M.A.R.T. Disable Operations subcommand from the host, all other S.M.A.R.T. subcommands—with the exception of S.M.A.R.T.
12.43.2 Device Attribute Data Structure The following defines the 512 bytes that make up the Attribute Value information. This data structure is accessed by the host in its entirety using the S.M.A.R.T. Read Attribute Values subcommand. All multibyte fields shown in these data structures are in byte ordering, that is, the least significant byte occupies the lowest numbered byte address location in the field.
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Attribute ID Numbers: Any nonzero value in the Attribute ID Number indicates an active attribute. The device supports following Attribute ID Numbers. Attribute Name Indicates that this entry in the data structure is not used Raw Read Error Rate Throughput Performance Spin Up Time Start/Stop Count Reallocated Sector Count...
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Automatic Off-line Data Collection is enabled. Bits 0–6 represent a hexadecimal status value reported by the device. Value Definition Off-line data collection never started. All segments completed without errors. Off-line data collection is suspended by the interrupting command. Off-line data collecting is aborted by the interrupting command. Off-line data collection is aborted with a fatal error.
Off-line Read Scanning implemented bit The device does not support Off-line Read Scanning The device supports Off-line Read Scanning Self-test implemented bit Self-test routing is not implemented Self-test routine is implemented Reserved (0) 12.43.2.7 S.M.A.R.T. Capability This word of bit flags describes the S.M.A.R.T. capabilities of the device. The device will return 03h indicating that the device will save its Attribute Values prior to going into a power saving mode and supports the S.M.A.R.T.
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The sequence of active Attribute Thresholds will appear in the same order as their corresponding Attribute Values. Table 129: Device Attribute Thresholds Data Structure Description Byte Offset Value Data Structure Revision Number 0010h 1st Device Attribute 30th Device Attribute 15Eh Reserved 16Ah Vendor specific...
12.43.4 S.M.A.R.T. Log Directory The following table defines the 512 bytes that make up the S.M.A.R.T. Log Directory. The S.M.A.R.T. Log Direc- tory is S.M.A.R.T. Log Address zero and is defined as one sector long. Table 131: S.M.A.R.T. Log Directory Description Byte Offset...
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12.43.5.4 Error log data structure The data format of each error log data structure is shown below. Table 133: Error log data structure Description Byte Offset 1st command data structure 2nd command data structure 3rd command data structure 4th command data structure 5th command data structure Error data structure 12.43.5.5 Command data structure...
The state field contains a value indicating the device state when command was issued to the device. Value State Unknown Sleep Standby Active/Idle S.M.A.R.T. Off-line or Self-test x5h-xAh Reserved xBh-xFh Vendor specific The value of ’x’ is vendor specific 12.43.6 Self-test log data structure The following table defines the 512 bytes that make up the Self-test log sector.
12.43.7 Error reporting The following table shows the values returned in the Status and Error Registers when specific error conditions are encountered by a device. Table 137: S.M.A.R.T. Error Codes Error condition Status Register Error Register A S.M.A.R.T. FUNCTION SET command was received by the device without the required key being loaded into the Cylinder High and Cylinder Low registers.
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Input parameters from the device on command complete Sector Count Bits 7 - 3 (Tag) contain the Tag of the completed command. Bit 2 (REL) is cleared to zero. Bit 1 (I/O) is set to one. Bit 0 (C/D) is set to one. Sector Number, Cylinder High/Low, H Sector address of unrecoverable error (applicable only when an unrecoverable error has occurred).
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Cylinder High PreviousLBA (47:40) Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error Cylinder Low(HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error Cylinder Low(HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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FUA (bit 7) When the FUA bit is set to 1, the completion status is indicated after the trans- ferred data are written to the media also when Write Cache is enabled. When the FUA bit is set to 0, the completion status may be indicated before the transferred data are written to the media successfully when Write Cache is enabled.
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This indicates the head number of the sector to be transferred. (L = 0) In LBA mode this register contains current the LBA bits 24–27. (L = 1) The drive internally uses 52 bytes of ECC on all data read or writes. The 4-byte mode of operation is provided by means of an emulation technique.
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Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error. Cylinder High (HOB=0) LBA (23:16) of the address of the first unrecoverable error.
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Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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In LBA mode this register contains the current LBA bits 8–15 (Low) and 16–23 (High). (L = 1) This indicates the head number of the last transferred sector. (L = 0) In LBA mode this register contains the current LBA bits 24–27. (L = 1) Deskstar T7K250 Hard Disk Drive Specification...
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Input parameters from the device Sector Number (HOB=0) LBA (7:0) of the address of the first unrecoverable error. Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error.
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If the WC bit is set to one and errors occur in transfer or writing of the data, the device shall continue to transfer the amount of data requested and then provide ending status with BSY bit cleared to zero, the SE bit set to one, the ERR bit cleared to zero, and the type of error, ICRC, IDNF or ABRT reported in the error log.
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Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error. Cylinder High (HOB=0) LBA (23:16) of the address of the first unrecoverable error. Cylinder High (HOB=1) LBA (47:40) of the address of the first unrecoverable error.
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If the WC bit is set to one and errors occur in transfer or writing of the data, the device shall continue to transfer the amount of data requested and then provide ending status with BSY bit cleared to zero, the SE bit set to one, the ERR bit cleared to zero, and the type of error, ICRC, IDNF or ABRT reported in the error log.
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Sector Number (HOB=1) LBA (31:24) of the address of the first unrecoverable error. Cylinder Low (HOB=0) LBA (15:8) of the address of the first unrecoverable error. Cylinder Low (HOB=1) LBA (39:32) of the address of the first unrecoverable error. Cylinder High (HOB=0) LBA (23:16) of the address of the first unrecoverable error.
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Deskstar T7K250 Hard Disk Drive Specification...
13.0 Time-out values The timing of BSY and DRQ in Status Register are shown in the table below. Table 144: Time-out values INTERVAL START STOP TIME-OUT Power On Device Busy After Power On Status Register BSY=1 400 ns Power On Device Ready After Power On Status Register BSY=1...
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Deskstar T7K250 Hard Disk Drive Specification...
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S.M.A.R.T. Function Set ....................199 Safety ..........................66 Secondary circuit protection ...................66 Sector Addressing ......................82 Security Mode Feature Set ....................88 Shock ..........................62 Signal definitions ......................25 Specification ........................47 Temperature ........................53 Time-out values ......................241 Timings multi word DMA 34 reset 29 Ultra DMA 35 UL approval ........................66 Vibration .........................62 Weight ..........................58...
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References in this publication to Hitachi Global Storage Technologies products, programs or services do not imply that Hitachi Global Storage Technologies intends to make these available in all countries in which Hitachi Global Storage Technologies operates. Product information is provided for information pur- poses only and does not constitute a warranty.