QNAP VioStor NVR User Manual

QNAP VioStor NVR User Manual

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VioStor NVR
Network Video Recorder
User Manual (Version: 3.2.0)
©Copyright 2010. QNAP Systems, Inc. All Rights Reserved

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  • Page 1 VioStor NVR Network Video Recorder User Manual (Version: 3.2.0) ©Copyright 2010. QNAP Systems, Inc. All Rights Reserved...
  • Page 2 All brands and products names referred to are trademarks of their respective holders. LIMITED WARRANTY In no event shall the liability of QNAP Systems, Inc. (QNAP) exceed the price paid for the product from direct, indirect, special, incidental, or consequential software, or its documentation. QNAP makes no warranty or representation, expressed,...
  • Page 3 Important Notice Reading instructions Please read the safety warnings and user manual carefully before using this product. Power supply This product can only be used with the power supply provided by the manufacturer. Service Please contact qualified technicians for any technical enquires. Do not repair this product by yourself to avoid any voltage danger and other risks caused by opening this product cover.
  • Page 4: Table Of Contents

    Table of Contents TABLE OF CONTENTS ........................4 SAFETY WARNING..........................7 CHAPTER 1. INTRODUCTION ....................8 ..........................8 VERVIEW ......................9 ARDWARE LLUSTRATION 1.2.1 VS-8040U-RP/ VS-8032U-RP/ VS-8024U-RP..............9 1.2.2 VS-8040/ VS-8032/ VS-8024 ...................10 1.2.3 VS-5020/ VS-5012......................11 1.2.4 VS-4016U-RP .........................12 1.2.5 VS-2012/ VS-2008......................13 VS-201P/ V 1.2.6 ........................14 NVR-104P/ V 1.2.7...
  • Page 5 4.1.4 Intelligent Video Analytics (IVA)..................56 ......................63 IGITAL ATERMARKING 4.2.1 Export Files with Digital Watermark ................63 4.2.2 Watermark Proof ......................66 ....................68 CCESS THE ECORDING 4.3.1 Windows Network Neighborhood (SMB/CIFS)...............69 4.3.2 Web File Manager (HTTP) .....................69 4.3.3 FTP Server (FTP) ......................70 CHAPTER 5. SYSTEM ADMINISTRATION ................71 ......................73 UICK...
  • Page 6 5.7.1 Alert Notification ......................130 5.7.2 SMSC Settings.......................131 5.7.3 Restart/ Shut Down.......................133 5.7.4 Hardware Settings ......................134 5.7.5 System Update ......................137 5.7.6 Backup/ Restore/ Reset Settings..................138 5.7.7 Remote Replication.......................139 5.7.8 Hard Disk SMART ......................143 5.7.9 E-map ...........................145 5.7.10 Ping Test ........................145 5.7.11 Advanced System Settings.....................146 &...
  • Page 7: Safety Warning

    Safety Warning This product can operate normally in the temperature of 0ºC–40ºC and relative humidity of 0%–90%. Please make sure the environment is well-ventilated. The power cord and devices connected to this product must provide correct supply voltage. Do not place this product in direct sunlight or near chemicals. Make sure the temperature and humidity of the environment are in optimized level.
  • Page 8: Chapter 1. Introduction

    Chapter 1. Introduction Overview QNAP VioStor (hereafter referred to as NVR or VioStor) is the high performance network surveillance solution for network-based monitoring of IP cameras, video recording, playback, and remote data access. Up to 120 channels from multiple QNAP NVR servers can be monitored simultaneously. The NVR supports IP-based cameras from AXIS, ACTi, A-MTK, Arecont Vision, AVTECH, Canon, CNB, DIGITUS, D-Link, EDIMAX, ELMO, EtroVision, GANZ, Hikvision, iPUX, IQeye, LevelOne, Messoa, MOBOTIX, Nakayo, Panasonic BB/ BL/ i-Pro, SANYO, SONY, TOSHIBA,...
  • Page 9: Hardware Illustration

    Hardware Illustration 1.2.1 VS-8040U-RP/ VS-8032U-RP/ VS-8024U-RP 1. LED indicators: Status, LAN, USB, HDD1–8 2. Power button 3. Select button 4. Enter button 5. Power connector 6. Password & network settings reset button 7. RS-232 8. VGA (reserved) 9. USB 2.0 x 4 10.
  • Page 10: Vs-8040/ Vs-8032/ Vs-8024

    1.2.2 VS-8040/ VS-8032/ VS-8024 1. One touch auto video backup button 2. USB 2.0 3. LED indicators: Status, LAN, USB, HDD1–8 4. Power button 5. Select button 6. Enter button 7. Power connector 8. Giga LAN x 2 9. USB 2.0 x 4 10.
  • Page 11: Vs-5020/ Vs-5012

    1.2.3 VS-5020/ VS-5012 1. One touch auto video backup button 2. USB 2.0 3. LED indicators: USB, Status, HDD1–HDD5, LAN 4. Power button 5. Select button 6. Enter button 7. Power connector 8. Giga LAN x 2 9. USB 2.0 x 4 10.
  • Page 12: Vs-4016U-Rp

    1.2.4 VS-4016U-RP 1. One touch auto video backup button 2. USB 2.0 3. LED indicators: USB, Status, HDD1–HDD4, LAN 4. Power button 5. Power connector 6. Giga LAN x 2 7. USB 2.0 x 2 8. Password & network settings reset button 9.
  • Page 13: Vs-2012/ Vs-2008

    1.2.5 VS-2012/ VS-2008 1. One touch auto video backup button 2. USB 2.0 3. LED indicators: HDD1, HDD2, LAN & eSATA 4. Power button 5. Power connector 6. Giga LAN x 2 7. USB 2.0 x 2 8. Password & network settings reset button 9.
  • Page 14: Vs-201P/ V

    1.2.6 VS-201P/ V 1. One touch auto video backup button 2. USB 2.0 3. LED indicators: USB, status, HDD1, HDD2, LAN, and power 4. Power button 5. Power connector 6. Giga LAN 7. USB 2.0 x 2 8. Password & network settings reset button 9.
  • Page 15: Nvr-104P/ V

    1.2.7 NVR-104P/ V 1. One touch auto video backup button 2. USB 2.0 3. LED indicators 4. Power button 5. USB 2.0 x 2 6. eSATA port 7. Giga LAN 8. Password & network settings reset button 9. Power connector 10.
  • Page 16: Vs-101P/ V

    1.2.8 VS-101P/ V 1. One touch auto video backup button 2. USB 2.0 3. LED indicators 4. Power button 5. Power connector 6. Giga LAN 7. USB 2.0 x 2 8. Password & network settings reset button 9. Kensington security slot 10.
  • Page 17: Install The Viostor

    Chapter 2. Install the VioStor For the information of the hardware installation, please refer to the “Quick Installation Guide” in the product package. Personal Computer Requirements For better system performance, your computer should at least fulfill the following requirements: No. of Format Others Channels...
  • Page 18 Security Settings of the Web Browser Please make sure the security level of the IE browser in Internet Options is set to Medium or lower.
  • Page 19: Hard Disk Compatibility List

    Hard Disk Compatibility List This product works with 2.5”/ 3.5” SATA hard disk drives from major hard disk brands. For the HDD compatibility list, please visit http://www.qnapsecurity.com/pro_compatibility.asp. QNAP disclaims any responsibility for product damage/ malfunction or data loss/ recovery due to misuse or improper installation of hard disks in any occasions for any reasons.
  • Page 20: Check System Status

    Check System Status LED Display & System Status Overview Colour LED Status Description 1) A USB device is detected 2) A USB device is being removed from the NVR Flashes blue 3) The USB device connected to the every 0.5 sec front USB port of the NVR is being accessed 4) The NVR data is being copied to the...
  • Page 21 The NVR is in degraded mode (one Flashes red member drive fails in RAID 1, RAID 5 every 0.5 sec or RAID 6 configuration)* 1) The NVR is starting up Flashes green System Red/ 2) The NVR is not configured every 0.5 sec Status Green...
  • Page 22 Beep Alarm (beep alarm can be disabled in “System Tools” > “Hardware Settings”) Beep sound No. of Times Description Short beep (0.5 sec) 1) The NVR is starting up 2) The NVR is being shut down (software shutdown) 3) The user presses the reset button to reset the NVR 4) The system firmware has been updated...
  • Page 23: System Configuration

    System Configuration Install the Finder Execute the product CD, the following menu is shown. Click “Install Finder”.
  • Page 24 Follow the instructions to install the Finder. If you are using Windows XP SP2 or above, the following screen will be shown. Click “Unblock”. The Finder detects the VioStor in the network and prompts you to perform quick setup. Click “Yes” to continue. Note: If the VioStor is not found, click “Refresh”...
  • Page 25 You must enter the administrator name and password to perform quick setup. The default administrator name and password are as below: Use name: admin* Password: admin *If you are using VS-201/ VS-101/ NVR-104, the login name is “administrator” and the login password is “admin”. Note: Please make sure all the IP cameras are configured and connected to the network.
  • Page 26 Click “Start installation” to execute the quick configuration. The quick configuration is completed and you can start to use the VioStor. Click “Start Monitoring” to view the live video from the cameras or click “Close” to return to the system administration home page. The first time you connect to the server, please install the ActiveX.
  • Page 27 When the live video is displayed and the recording indicator is shown, you have successfully installed the VioStor.
  • Page 28: Chapter 3. Start To Use The Viostor

    Chapter 3. Start to Use the VioStor When you have installed the VioStor and other hardware, and connected it to the network, you can use the browser in your PC to connect to the VioStor. It is recommended to use Microsoft Internet Explorer for browsing. Important Notice: Before you start to use the VioStor, you must install the hard disks in the VioStor, finish disk volume configuration and format the hard disk(s).
  • Page 29 Enter the user name and password to login the VioStor. Default User name: admin* Default Password: admin * If you are using VS-201/ VS-101/ NVR-104, the login name is “administrator” and the login password is “admin”. To view the live video, you must install the ActiveX control. Follow the instructions to install it.
  • Page 30: Monitoring Page

    Monitoring Page When you have successfully logged in the VioStor, the monitoring page is shown. Select the display language. You can start to configure the system settings and use the monitoring and recording functions of the server. Server name View monitoring Adjust channel...
  • Page 31 System configuration: Login the system administration page. Monitor settings: Configure the advanced settings of monitoring page. You can configure the source of video/ audio stream, event notification, and snapshot folder. Playback: Enter the recording playback page. The administrator can grant access right to the users. Help: View the system online help.
  • Page 32 You can also use the mouse wheel or the PTZ control panel to use the digital zoom function. Focus control: Focus control of the PTZ camera. Select PTZ camera preset positions: You can view different preset positions of the camera by clicking the number buttons.
  • Page 33 e. Enable live tracking: Available on Panasonic NS202(A) camera. Disable live tracking: Available on Panasonic NS202(A) camera. g. Auto cruising: This feature is used to configure the PTZ cameras to cruise according to the preset positions and the staying time set for each preset position.
  • Page 34: Live Video Window

    3.2.1 Live Video Window If the IP camera is properly configured, you can see the current video from the remote IP camera. If your camera supports pan and tilt functions, you can click on the video window directly to adjust the viewing angle. If the camera supports zooming, you can use a wheel mouse to adjust the zooming distance by scrolling the wheel.
  • Page 35 Camera Status The camera status is indicated by the icons shown below: Icon Camera Status Scheduled or continuous recording is in process This IP camera supports audio function This IP camera supports PT function Manual recording is enabled The recording triggered by advanced event management (“Camera Settings”...
  • Page 36: Display Mode

    3.2.2 Display Mode By changing the display mode, you can adjust the visual effects when viewing video of single or multiple cameras. Single channel mode Picture-in-Picture mode 4-channel mode 6-channel mode 8-channel mode 9-channel mode 10-channel mode Multi-channel mode Adjust window size Sequential mode Full screen 3.2.3...
  • Page 37: Multi-Server Monitoring

    3.2.4 Multi-server Monitoring Click “Server List” on the live view page. a. Click “Auto Detect” to search for the QNAP NVR in the LAN and add the server to the server list. b. Click “Add” to add the QNAP NVR to the server list. Up to 120 channels from different NVR servers can be added for monitoring.
  • Page 38: Auto Cruising

    3.2.5 Auto Cruising The auto cruising feature of the VioStor NVR is used to configure the PTZ cameras to cruise according to the preset positions and the staying time set for each preset position. To use the auto cruising feature, follow the steps below.
  • Page 39 4. Click the number buttons to view the preset positions of the PTZ camera. When you click the button, the name of the corresponding preset position is shown on the “Preset Name” drop down menu.
  • Page 40 5. Add: To add a setting for auto cruising, select the “Preset Name” from the drop down menu and enter the staying time (interval, in seconds). Click “Add”. 6. Update: To change a setting on the list, highlight the selection. Select another preset position from the drop down menu and/or change the staying time (interval).
  • Page 41 8. After configuring the auto cruising settings, check the box “Enable auto cruising” and click “OK”. The system will start auto cruising according to the settings. Note: The default staying time (interval) of the preset position is 5 seconds. You can enter 5-999 seconds for this setting.
  • Page 42: Chapter 4. Playback The Video Files

    Chapter 4. Playback the Video Files The VioStor provides an intuitive web interface to search and play recording files, no extra software installation is necessary. In addition, you can use network file services to access the recorded video files directly. Use the Web Playback Interface (VioStor Player) Click the playback button on the monitoring page.
  • Page 43: Connect To Server For Playback

    4.1.1 Connect to Server for Playback 1. Click “Play by Time”...
  • Page 44 2. The following dialog will be shown.
  • Page 45 3. Configure servers: a. Add: Add a server. b. Modify: Modify a server. c. Remove: Remove a server. d. Auto: Auto-search servers. e. Default settings: Enter the default user name and password for all newly added servers.
  • Page 46 4. Select the data search mode. Date and time search (Text entry) Select the NVR server(s) and the IP camera(s)*. ii. Click the “Text entry” tab. iii. Select the recording type, the start and end time when the video is recorded.
  • Page 47 Timeline search Select the server(s) and the IP camera(s)*. * You can select 4 IP cameras at maximum. Click the “Graphical entry” tab.
  • Page 48 iii. Select the recording type. Specify the time range when the files are recorded. The settings will be applied to all the cameras selected. Click “Preview” to preview the searched video. Click “OK”.
  • Page 49 Event entry Select the server(s) and the IP camera(s)*. * You can select 4 IP cameras at maximum. Click the “Event entry” tab.
  • Page 50 iii. Select the event type. Specify the time range when the files are recorded. Specify the number of minutes for playing the video recorded before and after the event.
  • Page 51 Event search. This function is provided for you to search all the events occurred on the IP cameras. You may refer to the event details to search for the recording data. Search all: Search for the specified events occurred on all the IP cameras of an NVR within the time range specified.
  • Page 52 5. When the files are shown, you can play the video. Note: The regular recordings are shown in white while the alarm recordings are shown in red on the playlist.
  • Page 53: Play Video Files From Your Computer

    4.1.2 Play Video Files from Your Computer Click “Add files” Browse and select the files. The playlist will be shown. Click “Play” to start playing.
  • Page 54: Quad-View Playback

    4.1.3 Quad-view Playback Quad-view playback allows you to search for the video recorded by the NVR servers quickly. You can view the video of four IP cameras simultaneously or select to divide the video of one IP camera into four time periods and play them in a quad-view window.
  • Page 55 Play the video of four IP cameras Select four IP cameras for video search. Enter the search criteria in “Text entry” or “Graphical entry”. When the search results are shown, you can play the video files of the four IP cameras simultaneously.
  • Page 56: Intelligent Video Analytics (Iva)

    4.1.4 Intelligent Video Analytics (IVA) QNAP NVR supports intelligent video analytics to allow the users to search the video files efficiently. The time and effort for video search are largely reduced. The following features are supported for video analytics: Motion detection: Detects movement of objects in the video. Foreign object: Detects new object in the video.
  • Page 57 2. On the playback window, click...
  • Page 58 Note: When you check the option “Pause when found”, the data search stops when a video file which matches the search criteria is found. When you enable “Highlight the detection zone”, the moving objects will be highlighted in red brackets; the foreign or missing objects will be highlighted in yellow brackets;...
  • Page 59 6. Define detection zone. Mouse over the edge of the red zone and use the mouse to define the detection zone. Click “Select all” to highlight all the area for detection.
  • Page 60 7. Define object size for the detection. You can use the mouse the drag the yellow zone to highlight the minimum object size for detection. Note: After enabling this option, all the objects smaller than the yellow zone will be ignored for detection.
  • Page 61 8. Click “Search” to start searching the video by IVA. The results and will be shown.
  • Page 62 Note: You can double click an entry on the search result dialog to play the video. The player will play the video starting from 15 seconds before the event to 15 seconds after the event. You can also right click an entry on the search result dialog to export the video and save it on your computer.
  • Page 63: Digital Watermarking

    Digital Watermarking The VioStor NVR supports digital watermarking to protect the videos and snapshots from unauthorized modification. You can select to add digital watermark on the exported video and snapshot on the VioStor Player. A permanent digital signal will be added to the exported files which are selected for digital watermarking. The watermark cannot be removed and is only visible by using watermark proof software.
  • Page 64 3. Select to add digital watermark in the exported snapshot or video. 4. Select the recording files (refer to Chapter 5. Click to convert the video files into avi format and enter the file name.
  • Page 65 6. Click to start playing and exporting the files. Note: When you click again, the NVR will stop exporting the files and resume to playback mode.
  • Page 66: Watermark Proof

    4.2.2 Watermark Proof After installing the VioStor Player, Watermark Proof will be installed. From the Windows Start menu, select “All Programs” > “QNAP” > “Player” to locate “Watermark Proof”. Run Watermark Proof. The following window will be shown. Click to browse and locate the files. You can select more than one file at one time.
  • Page 67 Click to start checking the files. The Watermark Proof will start checking the files and show the proof result. If you check the option “Stop when watermark error is detected”, the checking procedure will stop if a failed file is detected. Otherwise the program will check all the files you have selected.
  • Page 68: Access The Recording Data

    Access the Recording Data You can access the recording data on the VioStor by the following network services: Windows Network Neighborhood (SMB/CIFS) Web File Manager (HTTP) FTP Server (FTP) Note: To access the video file by these protocols, you must enter the user name and password with the administrator access right.
  • Page 69: Windows Network Neighborhood (Smb/Cifs)

    4.3.1 Windows Network Neighborhood (SMB/CIFS) You can access recorded files by the SMB/CIFS protocol, which is popularly used in Windows system. You can connect to the recording folder by either: On the web-based playback interface, click “SMB”. In Windows XP, run \\VioStorIP\ from the Start menu.
  • Page 70: Ftp Server (Ftp)

    4.3.3 FTP Server (FTP) You can access the recording data by FTP: On the web-based playback interface, click “FTP”. In Windows Internet Explorer, enter ftp://username:password@VioStorIP/. For example, enter ftp://admin:admin@172.17.26.154/ if the IP address of your VioStor is 172.17.26.154.
  • Page 71: Chapter 5. System Administration

    Chapter 5. System Administration To login VioStor system configuration page, please login the monitoring page as an administrator and click The System Administration home page will be shown as below. An intuitive user interface is provided for the users to view the monitoring screens, connection and recording status, and network bandwidth.
  • Page 72 If the system is not configured yet, the Quick Configuration page will be open to guide you through the setup steps first. If there are questions, click on the help button on the top right hand corner. The functions of the buttons are described below: Return to monitoring page Playback recorded video View On-line help...
  • Page 73: Quick Configuration

    Quick Configuration Please follow the instructions on the web page to configure VioStor. Note: All changes to the settings will be effective only when the last step is applied. Step 1. Enter the server name. Step 2. Change the administrator password or select to use the original password. Step 3.
  • Page 74 Step 4. Enter the IP address, subnet mask and default gateway of the server. Step 5. Select the disk configuration to initialize the disk volume for the first time configuration. All data on the disk(s) will be deleted.
  • Page 75 Step 6. Initialize IP camera setting. Select the camera model; enter the camera name and IP address of the camera, and the user name and password to login the camera. You can also enable or disable recording on each camera, test connection to the cameras and then click “Save” to apply the changes.
  • Page 76 After completing the settings, click “Start Installation” to apply the changes and initialize the system. The quick configuration is completed and you can start to use the VioStor. Click “Start Monitoring” to view the live video from the cameras or click “Close” to return to the system administration home page.
  • Page 77: System Settings

    System Settings You can configure the basic system settings including server name, date & time, and view the system settings. 5.2.1 Server Name Enter the name of the VioStor. The server name is 14 characters long at maximum, which supports alphabets, numbers, and hyphen (-). The server does not accept names with space or names in pure number.
  • Page 78: Date & Time

    5.2.2 Date & Time Set the date, time, and time zone according to your location. If the settings are incorrect, the following problems may occur: When playing the recorded video files, the display time will be incorrect. The time of event log displayed will be inconsistent with the actual time when an action occurs.
  • Page 79: View System Settings

    5.2.3 View System Settings You can view the system settings, e.g. server name, on this page.
  • Page 80: Network Settings

    Network Settings You can configure the WAN and LAN settings, DDNS service, file service, host access control, protocol management and view the network settings in this section. 5.3.1 TCP/IP Configuration You can select one of the following two methods to configure the TCP/IP settings of the NVR.
  • Page 81 If your system supports 2 LAN ports, you can select to use failover, load balancing, or standalone settings. To use these features, make sure both LAN ports are connected to the network.
  • Page 82 Configuration of Network Interfaces Failover (Default settings for dual LAN NVR models) Failover refers to the capability of switching over the network transfer port to the redundant port automatically when the primary one fails due to hardware or connection error to avoid network disconnection. When the primary network port resumes to work, the network transfer will be switched back to that port automatically.
  • Page 83 Load balancing Load balancing enables the network resources to spread between two or more network interfaces to optimize network transfer and enhance system performance. It operates on layer 3 protocol (IP, NCP IPX) only. Multicast/ broadcast and other non-routable protocols, e.g. NetBEUI, can only be transferred via the main network port.
  • Page 84 Standalone The standalone option allows you to assign different IP settings for each network port. The VioStor can be accessed by different workgroups in two different subnets. However, when this function is enabled, failover does not work. You can only enable DHCP server for the primary network port (LAN 1). Network Transfer Rate You can select auto-negotiation (default), 1000 Mbps, or 100 Mbps.
  • Page 85 Secondary DNS Server Enter the IP address of secondary DNS server that provides DNS service for VioStor in external network. Enable DHCP Server If no DHCP is available in the LAN where the VioStor locates, you can enable this function to enable the VioStor as a DHCP server and allocate dynamic IP address to DHCP clients in LAN.
  • Page 86: Ddns (Dynamic Domain Name) Service

    5.3.2 DDNS (Dynamic Domain Name) Service The DDNS service enables users to connect VioStor via domain name directly. There is no need to memorize the lengthy IP address of the server. To enable the DDNS service, you have to register a DDNS account from a DDNS provider. Please refer to Appendix The VioStor currently supports the DDNS service provided by:...
  • Page 87: File Services

    5.3.3 File Services You can enable the SMB/ CIFS file service, Web File Manager and FTP service to access the recorded video files. These settings are enabled by default. If your VioStor is installed behind the router, you could enable FTP port mapping, so that users from the external network can access the VioStor via FTP (please refer to Appendix Passive FTP Port Range...
  • Page 88: Host Access Control

    5.3.4 Host Access Control Specify the connections to be allowed and denied to access the VioStor. Choose one of the following options to restrict access from a network or an IP address (host) to the server: Allow all connections (Default setting) Allow connection from all hosts to the server.
  • Page 89: Protocol Management

    5.3.5 Protocol Management To assign a specific port for accessing the VioStor by the web browser, please enable the option “Specify HTTP port number” and enter the port number. The default setting is 80. RTP (Real-time Transfer Protocol) is a standardized packet format for delivering real-time audio and video data of IP cameras over the Internet.
  • Page 90: View Network Settings

    5.3.6 View Network Settings You can view current network settings and status of VioStor in this section.
  • Page 91: Device Configuration

    Device Configuration You can configure SATA disk, RAID management tool, USB disk, and UPS settings in this section. 5.4.1 SATA Disk This page shows the model, size and current status of the disk(s) installed on the VioStor. You can format and check disks, and scan bad blocks on the disks. When the SATA disks are formatted, the VioStor will create the following default share folders: record_nvr: The folder for saving regular recording files...
  • Page 92 You can create the disk volume of the following type: Single Disk Volume Each hard disk drive is used as a standalone disk. If a disk is damaged, all the data will be lost. JBOD (Just a bunch of disks) JBOD is a collection of hard disk drives that does not offer any RAID protection.
  • Page 93 the parity information. To create a RAID 5 disk volume, a minimum of 3 hard disks are required. The storage capacity of a RAID 5 array equals (N-1). N is the total number of drive members in the array. RAID 6 Disk Volume The data are striped across all the drives in a RAID 6 array.
  • Page 94: Raid Management Tool

    5.4.2 RAID Management Tool *This function is not supported on VS-101, VS-201, NVR-104. RAID management tool allows you to carry out capacity expansion, RAID migration, or spare drive configuration with the original drive data reserved. Expand capacity This function enables drive capacity expansion by replacing the drives in a configuration one by one.
  • Page 95 Configure spare drive This function enables adding or removing RAID 5 spare drive. The options available are: Add spare drive in RAID 5 Remove spare drive in RAID 5 For detailed operation, please click “Comment” on the management interface to view the detailed operation instructions.
  • Page 96: Usb Disk

    5.4.3 USB Disk The VioStor supports USB disks for backup storage. Connect the USB device to the USB port of the server, when the device is successfully detected, the details are shown on this page. * VS-101, VS-201, NVR-104 does not support FAT32 and NTFS.
  • Page 97: Ups

    5.4.4 If there is UPS, you can enable UPS support. If the AC power is abnormal, the system will shut down according to the settings. If the time has not reached and the power of the UPS is not sufficient, the system will shut down immediately to protect the server.
  • Page 98: User Management

    User Management The NVR supports secure user access right management. A user can be defined as administrator, system manager, or user and given different rights of monitoring, playback, and system administration. Note: The server supports up to 32 users (including system default users). The NVR supports 3 types of users: 1.
  • Page 99 3. user Normal users have only the rights of monitoring and video playback. They have no administration authority. Please refer to Chapter 5.5.4 for more details.
  • Page 100: Create User

    5.5.1 Create user User Name The user name cannot be pure number. It must not exceed 32 characters. It is case-insensitive and supports double-byte characters, such as Chinese, Japanese, and Korean except: “ / \ [ ] : ; | = , + * ? < > ` ' Password The password is case-sensitive and can be 16 characters long at maximum.
  • Page 101: Edit User

    5.5.2 Edit User Select a user on the list and click “Edit”. You can change the password; assign system administration and camera access control. However, the user name cannot be changed. 5.5.3 Delete User To delete a user, select a user on the list and click “Delete”. Click “OK” to confirm. Note: The system administrator (admin, supervisor, sysmgr) cannot be deleted.
  • Page 102: User Access Rights Comparison

    5.5.4 User Access Rights Comparison The VioStor NVR supports three user types including system administrator, system manager, and normal user. The default system administrators are “admin” and “supervisor” who cannot change one another’s password, user type, and control access rights to the IP cameras.
  • Page 103 Change the camera access control of other administrators Create sysmgr Default Create other system manager accounts Delete sysmgr Delete other system No (Note 1) manager accounts Change the password of No (Note sysmgr Change the password of No (Note 2) other system managers Change the user type of Default...
  • Page 104: Camera Settings

    Camera Settings You can configure IP camera, recording, schedule, alarm, and advanced settings. 5.6.1 Camera Configuration Please follow the steps below to configure the IP cameras. Select a camera number. Select the camera brand. Select the camera model. Enter the camera name. Enter the IP address or domain name of the camera.
  • Page 105 Note: All the settings will not take effect until you click “Apply”. When applying the changes, recording operation will stop for a while (maximum 1 minute) and then restart. Click “Search” to search for the IP cameras in the local network. Select a channel for the camera and click “Add”...
  • Page 106 Note: QNAP NVR only supports JPEG CGI command interface, but does not guarantee the compatibility with all IP camera brands.
  • Page 107: Recording Settings

    5.6.2 Recording Settings Select a camera on the list and configure the recording resolution, frame rate, and quality. You can also enable manual recording. Click “Apply” to save the settings. Video compression: Choose a video compression format for the recording. Resolution: Select the recording resolution.
  • Page 108 Note: Starting and stopping manual recording will not influent scheduled or alarm recording tasks. They are independent processes. All the settings will not take effect until you click “Apply”. When applying changes, recording operation will stop for a while (maximum 1 minute) and then restart.
  • Page 109: Schedule Settings

    5.6.3 Schedule Settings You can select continuous recording or scheduled recording. The default setting is continuous recording. To set up a recording schedule, please select a camera number on the list. Then select the date and time and click “Add”. Click “Apply” to save the settings for the camera or click “Apply to all cameras”...
  • Page 110: Alarm Settings

    5.6.4 Alarm Settings The NVR provides “Traditional Mode” and “Advanced Mode” for the alarm settings. Select “Traditional Mode” to use the standard alarm settings in response to alarm events. To use advanced event management, select “Advanced Mode”. Note: VS-201/ VS-101/ NVR-104 does not support Advanced Mode in “Alarm Settings”.
  • Page 111 Note: • All the settings will be effective after you click “Apply”. When applying the changes, the current recording process will stop for a while (maximum 1 minute) and then restart. • To avoid blocking by the firewall, the IP cameras or video servers configured for alarm recording must be located on the same subnet as the NVR.
  • Page 112 Advanced Mode: The advanced mode consists of the event and action sections. You can define the action to take for each event triggered on the IP cameras or video servers connected to the NVR. To configure the advanced event management by the “Advanced Mode”, select an event type on the left channel list and configure the actions to take on the right.
  • Page 113 Events: The events supported by the NVR are classified as camera events (motion detection, alarm input, camera disconnection), NVR events (recording failure), and external events (user-defined events). Note: The camera events available vary according to the features supported by the IP cameras or video servers. Buttons on the event list Add an external event.
  • Page 114 The NVR supports the following event types. Before you define the action settings, select the events to manage and configure the settings. (1) Alarm input This option allows the NVR to trigger an action when the alarm input of the IP camera or video server is triggered.
  • Page 115 (2) Motion detection This option allows the NVR to trigger an action when a moving object is detected by the IP camera or video server. Select “Camera event” from the “Event List”. Locate the channel and click “Motion Detection”. Next, click the edit button ( ), enable this option, configure the settings, and click “Apply”.
  • Page 116 (4) Connection failure This option allows the NVR to trigger an action when the IP camera or video server is disconnected. Select “Camera Event” from the “Event List”. Locate the channel and click “Connection Failure”. After that, define the action on the right (discussed in later sections).
  • Page 117 (6) External event (user-defined events) To create a self-defined event on the NVR, select “User-defined Event” under “External event” on the “Event List”. Then click the + button. Enter the event name, for example, “door”. After creating an event, click the event name and define the action on the right (discussed in later sections).
  • Page 118 Event schedule settings: When you edit an event (not including camera disconnection, NVR events, and external events), you can click “Set Schedule” to define when the alarm settings will be active. To create a new schedule, select “New” and enter the schedule name. The schedule supports maximum 25 characters (double-byte characters, spaces, and symbols are allowed).
  • Page 119 Actions: The NVR supports different actions which can be activated when the selected events are triggered on the IP cameras or video servers. The actions include video recording, email alert, SMS alert, buzzer, PTZ camera control, alarm output, and logic output. Buttons on the action list Add an action: After configuring an event on the left, click “Add”...
  • Page 120 Note: Make sure you have enabled the action in the event settings; otherwise the action will not be executed. For example:...
  • Page 121 (1) Recording Select the channels (IP cameras or video servers) which will start recording when an event occurs. You may also select the following options: (i) Enter the time (in seconds) the recording should be executed after the event is triggered. (ii) Start recording when the event starts and stop recording when the event ends.
  • Page 122 (2) Camera control This option allows you to configure the PTZ camera to adjust to the preset position for monitoring or act according to the HTTP URL entered when an event is triggered. You can select a preset position from the drop-down menu or enter the HTTP URL.
  • Page 123 (3) Alarm output Select to activate the alarm device connected to the IP camera when an event is triggered. You may also select the following options: Enter the number of second(s) the alarm device will be active when the event is triggered. (ii) Activate the alarm device when the event starts and stop the alarm device when the event ends.
  • Page 124 (4) Email To allow the system administrator to receive instant email alert when an event is triggered, enter the SMTP settings. Multiple email addresses can be entered as the recipients. You may also select to attach the snapshots of the multiple channels (IP cameras/ video servers) available on the NVR.
  • Page 125 (5) SMS To allow the system administrator to receive instant SMS alert when an event is triggered, enter the SMS server settings. The default SMS service provider is Clickatell. To add other SMS service providers, click “Add” and enter the provider’s name and the URL template text.
  • Page 126 (6) Buzzer Enable the buzzer when an event is triggered. You may also select the following options: Enter the time (in seconds) the buzzer will sound when the event is triggered. (ii) Execute the buzzer when the event starts and stop the buzzer when the event ends.
  • Page 127 (7) User-defined Action You can enter a self-defined action when an event is triggered. Enter the login account and password, IP address, port, and the HTTP URL of other surveillance devices. You can manage the devices such as fire protection devices, power controller, and air conditioning control.
  • Page 128: Advanced Settings

    5.6.5 Advanced Settings You can configure advanced recording settings in this section. Maximum period for each recording file: Configure the maximum length of each recording file (maximum 15 min). When the available storage is less than…GB: Select the action to take when the available storage is less than the preset level.
  • Page 129 Pre/Post Alarm Recordings Start recording video…second(s) before the event occurs: Enter the number of seconds to start recording before an event occurs. Stop video recording…second(s) after the event ends: Enter the number of seconds to stop recording after an event ends. The maximum number of seconds for the above settings is 300, i.e.
  • Page 130: System Tools

    System Tools System Tools enable you to optimize the system maintenance and management. You can set alert notification, restart or shut down the server, configure hardware settings, system update, back up/ restore/ reset settings, set E-map and do ping test. 5.7.1 Alert Notification Enter the e-mail address of the administrator and the IP address of the SMTP server.
  • Page 131: Smsc Settings

    5.7.2 SMSC Settings You can configure the SMSC (Short message service center) settings to send SMS text messages to particular mobile phone numbers when an event takes place on the NVR. The default SMS service provider is Clickatell. You may also add your own SMS service provider by selecting “Add SMS Provider”...
  • Page 133: Restart/ Shut Down

    5.7.3 Restart/ Shut Down Follow the steps below to restart or shut down the server. Go to “System Tools” > “Restart/ Shutdown”. Click “Restart” to reboot the server or “Shut Down” to turn off the server.
  • Page 134: Hardware Settings

    5.7.4 Hardware Settings You can enable or disable the hardware functions of the server. Enable configuration reset switch By enabling this option, you can press the reset button for 5 seconds to reset the administrator password and system settings to default. Note: The configuration reset switch is enabled by default.
  • Page 135 Enable front video backup button VioStor supports direct copy of recording data on the server to the connected USB device via the USB port. You can set the number of days that the video is recorded to copy to the device. To use this function, please follow the steps below: Set the number of days that the latest recordings should be backed up.
  • Page 136 Smart Fan configuration After enabling the smart fan, the fan rotation speed is automatically adjusted according to the server temperature. It is recommended to enable this option. By manually setting the fan rotation speed, the fan rotates at the defined speed continuously.
  • Page 137: System Update

    5.7.5 System Update Before updating the system firmware, please make sure the product model and the firmware version are correct. Follow the steps below to update firmware: Download the release notes of the same version as the firmware from QNAP website http://www.qnapsecurity.com/.
  • Page 138: Backup/ Restore/ Reset Settings

    5.7.6 Backup/ Restore/ Reset Settings To backup all the settings, including user accounts, server name and network configuration etc., click “Backup” and select to open or save the setting file. To restore all settings, click “Browse” to select a previously saved setting file and click “Restore”...
  • Page 139: Remote Replication

    5.7.7 Remote Replication You can use the remote replication feature to copy the recording data of the local VioStor to a remote QNAP network attached storage (TS-509). The remote QNAP NAS is hereafter referred to as “the remote storage device”. Note: Before using this function, please make sure the Microsoft networking service of the remote storage device is enabled, and the corresponding path and user access right have been correctly configured.
  • Page 140 2. Enable remote replication (support multiple choices) In the above example, the system only copies the alarm recording data of the latest 3 days to the remote storage device. Check the box “Enable remote replication” to activate this feature. The system executes automatic backup of recording data to the remote storage device according to the settings.
  • Page 141 4. Configure the remote replication schedule For example, to enable the system to copy recording data automatically to remote storage device at 01:15 every Monday, please do the following: Check the box “Replication Schedule”, select “Weekly”, enter 01 Hour: 15 minute, and select “Monday”.
  • Page 142 The system displays the latest 10 remote replication records for you to analyze the status and troubleshooting. In the above example: 1. When the status is shown as “Failed (Remote access error)”: You can check the remote storage device is running or the network settings are correct. 2.
  • Page 143: Hard Disk Smart

    5.7.8 Hard Disk SMART This function is not supported on VS-101, VS-201, NVR-104. This page enables users to monitor hard drive health, temperature, and usage status by the hard disk S.M.A.R.T. mechanism. Select the hard drive and you can view the following information by clicking the corresponding buttons.
  • Page 145: E-Map

    5.7.9 E-map You can upload an E-map to VioStor to illustrate the location of the cameras. To upload an E-map, click “Browse” and select the E-map file. Then click “Upload”. You can change the caption for the E-map and click “Apply”. After uploading the E-map, click “Test”...
  • Page 146: Advanced System Settings

    5.7.11 Advanced System Settings You can set the timeout period to log off the users from the configuration page when the idling time has reached. Note: Timeout logoff does not apply to the monitoring, playback, advanced mode, device configuration, system update, remote replication, and Logs & Statistics pages.
  • Page 147: Logs & Statistics

    Logs & Statistics 5.8.1 System Event Logs The server can store 10,000 recent event logs, including warning, error, and information messages. In case of system malfunction, event logs (only in English) can be retrieved to analyze system problems. Click “Save” to save the logs as csv file. Click “Delete” to clear all logs. 5.8.2 Surveillance Logs This page shows the surveillance logs such as camera connection, motion detection,...
  • Page 148: On-Line Users List

    5.8.3 On-line Users List This page shows the information of the currently active users, e.g. the user name, IP address, and login time. 5.8.4 Historical Users List This page shows the information of the users who have logged in the system including the user name, IP address, login time, and the services they have accessed etc.
  • Page 149: System Connection Logs

    5.8.5 System Connection Logs The logs of connections to the server via samba, FTP, AFP, HTTP, HTTPS, Telnet, and SSH are recorded in this page. You can select to start or stop logging. The file transfer performance can be slightly affected by enabling the event logging.
  • Page 150: Chapter 6. System Maintenance

    Chapter 6. System Maintenance This section provides a general overview on system maintenance. Reset the Administrator Password and Network Settings To reset the administrator password and network settings, press the reset button of the server for five seconds. A beep sound will be heard. After resetting the system, you can login the server with the default user name and password: Default user name: admin*...
  • Page 151: Power Outage Or Abnormal Shutdown

    Power Outage or Abnormal Shutdown In case of power outage or improper shutdown of the server, the server will resume to the state before it is shut down. If your server does not function properly after restart, please do the following: If the system configuration is lost, configure the system again.
  • Page 152: Chapter 7. Lcd Panel

    Chapter 7. LCD Panel * This section is applicable to NVR models with LCD panel only. The NVR provides a handy LCD panel for you to perform disk configuration and view the system information. When the NVR is started up, you will be able to view the server name and IP address: N V R 5 F 4 D E 3 1 6 9 .
  • Page 153 For example, when you turn on the NVR with 5 hard drives installed, the LCD panel shows: C o n f i g . D i s k s ? R A I D 5 → You can press the “Select” button to browse more options, e.g. RAID 6. Press the “Enter”...
  • Page 154 View system information by the LCD panel When the LCD panel shows the server name and IP address, you may press the “Enter” button to enter the Main Menu. The Main Menu consists of the following items: 1. TCP/IP 2. Physical disk 3.
  • Page 155 Physical disk In Physical disk, you can view the following options: Disk Info Back to Main Menu The disk info shows the temperature and the capacity of the hard drive. D i s k : 1 T e m p : 5 0 °...
  • Page 156 System This section shows the system temperature and the rotation speed of the system fan. C P U T e m p : ° S y s T e m p : ° S y s F a n : 8 6 5 R P M Shut down Use this option to turn off the NVR.
  • Page 157 System Messages When the NVR encounters system error, an error message will be shown on the LCD panel. Press the “Enter” button to view the message. Press the “Enter” button again to view the next message. S y s t e m E r r o r ! P l s .
  • Page 158: Chapter 8. Troubleshooting

    Chapter 8. Troubleshooting The monitoring screen did not display. Please check the following: Check if you have installed ActiveX when logging in the monitoring page. Set the security level to “Medium” or lower in Internet Options of IE browser. Make sure VioStor is turned on and the network is correctly connected. The IP address of VioStor does not conflict with other devices in the same subnet.
  • Page 159 Note: If you have updated the configurations of VioStor, recording will be stopped temporarily and restart again shortly. I cannot login the administration page. Please check if you have the administrator authority. Only administrators are allowed to login VioStor. The live video is not clear or smooth sometimes. The image quality may be restricted and interfered by the actual network traffic.
  • Page 160 The screen is displayed abnormally with strange horizontal lines when the resolution of Panasonic BB-HCM381 camera is set as 640x480. This is due to the interlaced scanning design of the camera. Please login the camera’s configuration page and go to Setup->Camera->Vertical Resolution. Then configure the setting as 240.
  • Page 161: Appendix Adynamic Domain Name Registration

    Appendix A Dynamic Domain Name Registration The VioStor supports DDNS service provided by DynDNS. You can go to DynDNS website http://www.dyndns.org/ to register a dynamic domain name. Configure and activate DDNS service to enable the Internet users to access your VioStor via this dynamic domain name.
  • Page 162 Registration Procedure Please follow the steps below to register a dynamic domain name. This guide is for reference only. If there are any changes, please refer to the instructions or documents on the web site. Open the browser and connect to http://www.dyndns.com/. Click “Create Account”...
  • Page 163 Enter the user name, email address, and password to create an account for DDNS service. Please verify your email address to receive the confirmation message from the server. Select to accept the terms of service.
  • Page 164 Configure the mailing lists if necessary. Then click “Create Account”. When your account is successfully created, a confirmation message will be sent to your e-mail address. Please follow the instructions in the e-mail to activate your account within 48 hours. When you have finished the confirmation process, you can apply for your own dynamic domain name.
  • Page 165: Appendix Bconfiguration Examples

    Appendix B Configuration Examples Environment 1: VioStor, IP Camera, and monitoring PC are all in the same network Network Surveillance Installation for SOHO and SMB IP Address VioStor 192.168.1.1 192.168.1.100 Camera 1 192.168.1.101 Camera 2 192.168.1.102 Camera 3 192.168.1.103 In the example, just add the camera to the VioStor by entering the cameras’ IP address.
  • Page 166 Environment 2: The VioStor and the IP camera are installed behind the router, while the monitoring PC is located remotely IP Address Mapped port in router VioStor 192.168.1.1 8000 Camera 1 192.168.1.101 8001 Camera 2 192.168.1.102 8002 Camera 3 192.168.1.103 8003 Router public IP 219.87.144.205...
  • Page 167 In this example, to allow a remote PC to connect to the VioStor and the cameras, you need to: Step 1. Set up port mapping (virtual server) on the router. From Forward to 219.87.144.205:8000 192.168.1.1:80 219.87.144.205:8001 192.168.1.101:80 219.87.144.205:8002 192.168.1.102:80 219.87.144.205:8003 192.168.1.103:80 Step 2.
  • Page 168 Environment 3: The VioStor and the IP camera are all located remotely IP Address VioStor 219.87.144.205 Camera 1 61.62.100.101 Camera 2 61.62.100.102 Camera 3 61.62.100.103 In this example, just add the camera to the VioStor by adding its IP address to the “IP Address”...
  • Page 169 Environment 4: The VioStor and the IP camera are installed behind the router IP Address VioStor 1 192.168.1.101 VioStor 2 192.168.1.102 VioStor 3 192.168.1.103 Router public IP 219.87.145.205 In the example, to allow a PC which is located remotely to access each VioStor via FTP, you need to: Step 1.
  • Page 170: Technical Support

    Technical Support QNAP provides dedicated online support and customer service via instant messenger. You can contact us by the following means: Online Support: http://www.qnapsecurity.com/ MSN: q.support@hotmail.com Skype: qnapskype Technical Support in the USA and Canada: Email: q_supportus@qnap.com TEL: 909-595-2819 ext. 185 Address: 168 University Parkway Pomona, CA 91768-4300 Service Hours: 08:00-17:00 (GMT- 08:00 Pacific Time, Monday to Friday)
  • Page 171: Gnu General Public License

    GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/> Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works.
  • Page 172 Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it. For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software.
  • Page 173 To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.
  • Page 174 the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
  • Page 175 terms that prohibit them from making any copies of your copyrighted material outside their relationship with you. Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary. 3. Protecting Users' Legal Rights From Anti-Circumvention Law. No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting...
  • Page 176 License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”. c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged.
  • Page 177 noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b. d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge.
  • Page 178 If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information.
  • Page 179 supplement the terms of this License with terms: a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version;...
  • Page 180 licenses granted under the third paragraph of section 11). However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
  • Page 181 whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
  • Page 182 and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients.
  • Page 183 simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
  • Page 184 COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.

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