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Altos S205F / S200F User's Manual
Disk (drive, carrier, module) A SATA disk drive mounted in a carrier. You can have up to sixteen
disk drive carrier modules in each Altos S205F / S200F Storage System enclosure.
Enclosure The chassis assembly which houses the plug-in modules that make up the Altos S205F /
S200F Storage System.
ESI/Ops module A unit used to monitor and control all elements of the Enclosure. The ESI/
Operators (Ops) panel is supplied as an integral part of the Altos S205F / S200F Storage System
Enclosure core product.
Hot plugging A device with the capability of being connected to a subsystem without interrupting
the power supplies to that subsystem.
Hot swap Hot swapping is the term used for manually swapping a failed disk unit with a
replacement while the Altos S205F / S200F Storage System is in normal use.
Hz (Hertz)
A frequency measurement unit used internationally to indicate cycles per second.
Initialize
To prepare a hardware device for use.
LED Light Emitting Diode. A small light displayed on the cabinet, disk units and power supply
units.
Module (power supply, drive, I/O) A module is a power supply, disk drive or electronics unit held
in a carrier that plugs into a bay inside the enclosure. An Altos S205F / S200F Storage System
enclosure can contain sixteen drive modules, two power supply/cooling modules and two I/O
modules.
Operating system The software running the host computer. For example, on PCs it is often
Windows® 2000 or Windows® NT.
Power Cord Throughout this Altos S205F / S200F Storage System user's manual this term is used in
accordance with the preferred US context of: "an insulated flexible electric wire fitted with
connectors at each end and used for the transmission of electrical power to computer equipment.
Protocol A system of rules and procedures governing communications between two or more
devices. Protocols vary, but communicating devices must follow the same protocol in order to
exchange data. The format of the data, readiness to receive or send, error detection and error
correction are some of the operations that may be defined in protocols.
Redundant
Not essential.
ATA
SATA
Serial
drive interface standard based on serial signaling technology, faster and using
much smaller connectors and cables, improving performance and air circulation efficiency.
Serial Transmission The transfer of data characters one bit at a time, sequentially, using a single
electrical path.
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