Related Manuals for easyRAID ERQ16-U4R3
Summary of Contents for easyRAID ERQ16-U4R3
- Page 1 Q16 Hardware User Manual Ultra 320 SCSI to Serial ATA & Fibre Channel to Serial ATA Disk Array Systems Version 1.0...
- Page 3 ERQ16-U4R3 Ultra 320 SCSI to Serial ATA Disk Array System & ERQ16-F2R3 Fibre Channel to Serial ATA Disk Array System Hardware User Manual...
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Page 5: Table Of Contents
Components ......................12 Closed Front Panel ..................12 Open Front Panel ................... 13 Disk Tray ......................14 ERQ16-U4R3 Rear View ................15 ERQ16-F2R3 Rear View ................16 Installing Disks ....................17 Making Connections ................... 19 Connecting the Host Interface ................ 19 Connecting a network .................. -
Page 7: Preface
Preface About this Manual This manual is designed to make the disk array system as easy to use as possible. Information contained in this document has been checked for accuracy, but no guarantee is given that the con- tents are correct. Information and specifications are subject to change without notice. Copyright Notice ©... - Page 8 Q16 Serial ATA Disk Array Systems Important Safety Instructions, Care and Handling Before starting, take a few minutes to read this manual. Read all of these instructions and save this manual for later reference. Protect the disk array system from extremely high or low temperatures.
- Page 9 Q16 Serial ATA Disk Array Systems The appliance must be grounded. The disk array system is equipped with a 3-wire grounded type of power cord. This power cord will only fit into a grounded type of power outlet. If an extension cord or a power center is used with the...
- Page 10 Q16 Serial ATA Disk Array Systems Placement Notes • The disk array system LCD panel can be damaged by exposure to direct sunlight. Limit exposure to subdued or indirect sunlight only. • The disk array system should be used only in clean environments that are free from airborne contaminants such as dust, dirt, and smoke.
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Page 11: Chapter 1 Overview
1 Overview The disk array system uses groups of inex- pensive disks to provide flexibility when balancing data availability, access rate, and capacity management needs. High data availability is achieved by using the fault tolerance features of RAID (Redundant Array of Inexpensive Disks); hot spare disks with automatic on-line rebuild;... -
Page 12: Features
• Twelve SATA channels • Fast 64-bit RISC CPU based RAID controller with up to 1 GB of DDR cache memory. • Dual Ultra SCSI (ERQ16-U4R3) or fibre channel (ERQ16-F2R3) host interfaces • Audible alarm, disk tray LED, and LCD panel failure indicators... -
Page 13: Understanding Raid
Q16 Serial ATA Disk Array Systems Understanding RAID Read this section to understand how to balance data availability, access rate, and capacity man- agement needs. NRAID NRAID (Non-RAID) is an array that concatenates the space of all hard disks linearly and forms a large, logical disk. - Page 14 Q16 Serial ATA Disk Array Systems but makes availability lower, since there are more disks and failure of a single disk causes failure of the array. A RAID 0 array is unsuitable for data that can not easily be reproduced, or for data that must be available for critical system operation.
- Page 15 Q16 Serial ATA Disk Array Systems RAID 3 In RAID 3, data is divided into pieces; the parity of these pieces is calculated; and the pieces are written to separate disks in parallel with the writing of the parity to a dedicated disk. This process is called striping with parity.
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Page 16: Hot Spare Disks
Q16 Serial ATA Disk Array Systems RAID 5 In RAID 5, data is divided into pieces; the parity of these pieces is calculated; and the pieces and parity are written to separate disks in parallel. The parity is written to a different disk each time. -
Page 17: Summary Of Raid Levels
Q16 Serial ATA Disk Array Systems Summary of RAID Levels The following table summarizes the performance characteristics of each RAID level. A high availability or access rate number indicates high availability or quick access rate. Array Access Capacity Availability... -
Page 18: System Requirements
Q16 Serial ATA Disk Array Systems System Requirements Ensure that the following requirements are met before installing the disk array system. Operating Environment • 15 cm (6-inches) of space around the disk array system for proper ventilation • ambient temperature of 5°C to 40°C (40°F to 104°F) •... -
Page 19: Host Interface
The disk array system has either dual SCSI interfaces or dual fibre channel interfaces. Refer to the following sections to understand host interface system requirements. Small Computer Systems Interface The ERQ16-U4R3 has dual Ultra320 SCSI interfaces that are compatible with previous SCSI standards. Refer to the following table to understand SCSI bus requirements. Note Subtract the internal cable length (30 cm) from the maximum SCSI bus length to calculate the maximum external SCSI cable length. -
Page 21: Chapter 2 Basic Configuration
Front Panel Keys Disk Array System CD-ROM Terminator HPD to HPD Ultra320 SCSI HPD to VHDC Ultra320 SCSI (ERQ16-U4R3 Only) Cable (ERQ16-U4R3 Only) Cable (ERQ16-U4R3 Only) Screw pack Fix Screw Pack Hardware and software user Manuals Power Cables Fix Screw Pack... -
Page 22: Components
Q16 Serial ATA Disk Array Systems Components Closed Front Panel 5 6 7 Name Description Displays warning, operating, and configuration LCD panel information. Power-on indicator Indicates the disk array system power is on. Power supply fail indicator Indicates a failed power supply. -
Page 23: Open Front Panel
Q16 Serial ATA Disk Array Systems Open Front Panel 5 6 7 8 9 10 1112 13 14 15 16 1 2 3 4 Name Description Disk trays 1 to 16 Removable hot swap disk trays. 1-16 Front panel door... -
Page 24: Disk Tray
Q16 Serial ATA Disk Array Systems Disk Tray Front Name Description Power/Error indicator LED Different colors indicate different disk states: • Green – Disk online • Orange – Disk full • Red – No disk Indicates that the disk is being accessed. -
Page 25: Erq16-U4R3 Rear View
Q16 Serial ATA Disk Array Systems ERQ16-U4R3 Rear View Host Port 2 Host Port 1 Term MODEM Name Description Cooling fan 1 System cooling fan Host Port 2 Connects to the host server. (Secondary SCSI channel) Host Port 1 Connects to the host server. -
Page 26: Erq16-F2R3 Rear View
Q16 Serial ATA Disk Array Systems ERQ16-F2R3 Rear View Term MODEM Name Description Cooling fan 1 System cooling fan Port select switch Selects speed for host ports 1 and 2: • Up – 2 Gbps • Down – 1 Gbps Host Port 1 Connects to the host server. -
Page 27: Installing Disks
Q16 Serial ATA Disk Array Systems Installing Disks This section describes how to install disks in the disk array system. Read “Understanding RAID” on page 3 to decide how many disks are required. 1 Unlock the front panel door, then pull it open. - Page 28 Q16 Serial ATA Disk Array Systems 5 Slide the disk tray back into the empty slot (A), then slowly close the disk tray handle (B). 6 Repeat steps 2 to 5 until all of the required disks have been installed.
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Page 29: Making Connections
1 (primary SCSI channel) at the rear of the disk array system. 2 Connect the Ultra320 SCSI cable (B) to the top connector of the ERQ16-U4R3 host port 1 (primary SCSI channel) at the rear of the disk array system. - Page 30 Q16 Serial ATA Disk Array Systems Fibre Channel Interface The ERQ16-F2R3 has dual 2 Gbit fibre channel interfaces. Each interface can be used with optical or copper transceivers and cables. Follow these instructions to make optical connections. 1 Insert fibre cable into the ERQ16-F2R3 host port 1 (primary fibre channel) at the rear of the disk array system.
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Page 31: Connecting A Network
Q16 Serial ATA Disk Array Systems Connecting a network Connect the network cable to the RJ-45 port at the rear of the unit. -
Page 32: Connecting And Turning On The Power
Q16 Serial ATA Disk Array Systems Connecting and Turning on the Power 1 Plug a power cable (A) to a power connector at the rear of the unit, then plug the second power supply cable into the second power connector (B). -
Page 33: Mounting In A Rack
Q16 Serial ATA Disk Array Systems Mounting in a Rack When the disk array system is completely set up, it can be installed in a standard 19-inch rack. Follow the instructions in this section to install the disk array system in a rack. -
Page 34: Installing The Rail Extenders
Q16 Serial ATA Disk Array Systems Installing the Rail Extenders Follow these instructions to fit the rail extenders if required. 1 If required, bolt the rail extenders into place as shown using the small bolts provided. 2 Slide the disk array system into the rack and bolt it into place with the supplied fixing screws. -
Page 35: Chapter 3 Maintenance Replacing A Disk
3 Maintenance Replacing a Disk A disk failure is indicated when the Power/Error LED at the front of the drive tray turns red and the audible alert sounds. Note Turn off the audible alert by pressing the Up and Down function but- tons on the front panel twice simultaneously. -
Page 36: Replacing A Power Supply
Q16 Serial ATA Disk Array Systems Replacing a Power Supply The disk array system is equipped with a Power Supply Fail Indicator LED at the front of the unit that turns red when one of the power supplies fails. The message “Power x failure” also appears on the LCD panel, where x refers to power supply 1, or 2, and an audible alert sounds. - Page 37 Q16 Serial ATA Disk Array Systems 4 Pull the power supply handle out. 5 Remove the faulty power supply by pulling the power supply handle and pressing the release catch. Release catch 6 Insert a new power supply. 7 Push the power supply handle into place.
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Page 38: Upgrading Memory
Q16 Serial ATA Disk Array Systems Upgrading Memory The disk array system takes a single 200 pin PC200 DDR SDRAM SO-DIMM with a maximum capacity of 1 GB. Follow these instructions to upgrade the memory. 1 Loosen the screws holding the controller cage in place. - Page 39 Q16 Serial ATA Disk Array Systems 5 Gently push the new DIMM into the socket at 45 degrees, then push the corners of the DIMM down. The DIMM is secured by the DIMM retaining clips. Note The DIMM module will fit in only one direction. Do not force the DIMM into place.
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Page 41: Appendix
• Optional battery backup for disk array status • LED indicator on disk failures Connectors • 4 x 2-Gbit Fibre ports (2 channels), ERQ16-U4R3 model only • 4 x Ultra320 SCSI ports(2 channels), ERQ16-F2R3 model only • 1 x RS-232 Serial port (115200, n, 8, 1) •... - Page 42 Q16 Serial ATA Disk Array Systems Item Specification Controller Intel i80321 64-bit RISC microprocessor Disk Interface Serial ATA I Disk Channels 16 channels Disk Interface Chipset Marvell MV88SX8050 Memory Type PC200 DDR 200-pin SO-DIMM Memory Sockets Memory Size Up to 1 GB...
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