easyRAID Q12 Hardware User Manual Ultra 320 SCSI to Serial ATA & Fibre Channel to Serial ATA Disk Array Systems Version 1.
easyRAID Q12-U4R2 Ultra 320 SCSI to Serial ATA Disk Array System & easyRAID Q12-F2R2 Fibre Channel to Serial ATA Disk Array System Hardware User Manual
Table of Contents Preface................................................................................................................... i Chapter 1 Overview Features ................................................................................................................ 2 Understanding RAID ............................................................................................. 3 NRAID ........................................................................................................
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 contents are correct. Information and specifications are subject to change without notice.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Important Safety Instructions, Care and Handling Preface – 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. Let the disk array system warm (or cool) to room temperature before using it. Important Safety Instructions, Care and Handling Protect the disk array system from being bumped or dropped.
ERQ12-U4R2 & ERQ12-F2R2 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. Never push any kind of object into the disk array system through cabinet gaps and openings, since they may touch dangerous voltage points and cause a risk of fire or electric shock. Unplug the power cord from the wall outlet before cleaning. Keep the disk array system dry.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Placement Notes Preface – Important Safety Instructions, Care and Handling • 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. Excessive moisture or oil particles in the air can also hinder disk array system performance.
1 Overview The disk array system uses groups of inexpensive 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; hot swap disks, and power supplies; independent SATA disk controllers; and dual host controllers. Our confidence in the disk array system is backed by a three year warranty.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Features 1 The main features of the disk array system are listed as follows. Refer to the specifications table on page 31 for more detailed information.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Understanding RAID NRAID (Non-RAID) is an array that concatenates the space of all hard disks linearly and forms a large, logical disk. The space presented by the NRAID array starts sequentially from the space of the first member disk to the last member disk without striping, mirroring, or parity. Just a Bunch Of Disks Just a Bunch Of Disks (JBOD) consists of two or more disks that can be different sizes.
ERQ12-U4R2 & ERQ12-F2R2 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. 1 RAID 0 consists of two or more disks of equal capacity. The total capacity of RAID 0 is the sum of the capacities of each disk. Disks are added until the desired total capacity is reached.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems RAID 3 1 RAID 3 consists of two or more disks used for data and one disk used for fault tolerant data. The total capacity of RAID 3 is the sum of the capacities of each data disk. Add disks until the desired capacity is reached, then add one more disk for fault tolerance.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems RAID 5 1 Overview – Understanding RAID 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. Parity provides redundant information about the data on other disks. If a single disk fails, then the data on the other disks is used to regenerate the data on the failed disk.
ERQ12-U4R2 & ERQ12-F2R2 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. 1 Availability Access Rate Capacity Utilization NRAID 1 1 100% Sum of all disks in the array JBOD 1 1 100% Data is distributed by filling each disk in turn. RAID 0 1 5 100% Data is divided into pieces and written to all disks in parallel.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems System Requirements Ensure that the following requirements are met before installing the disk array system.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems 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. 1 The SA-7230 has dual Ultra320 SCSI interfaces that are compatible with previous SCSI standards. Refer to the following table to understand SCSI bus requirements.
2 Basic Configuration This chapter describes disk array system connections and disk installation. Unpacking Contact your supplier if any of the following items are missing or damaged. Caution The disk array system is heavy. Be careful when lifting and moving it.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Components 2 Basic Configuration – Components Closed Front Panel 2 3 1 No. 4 5 6 7 8 9 Name Description 1 LCD panel Displays warning, operating, and configuration information. 2 Power-on indicator Indicates the disk array system power is on. 3 Power supply fail indicator Indicates a failed power supply. 4 Host computer access indicator Indicates data transfer between the disk array system and the host computer.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Open Front Panel 2 3 4 5 6 7 8 9 10 11 12 2 1 Basic Configuration – Components 13 No. Name Description 1-12 Disk trays 1 to 12 Removable hot swap disk trays. 13 Front panel door Protects the disks and houses the LCD Panel.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Disk Tray 2 Basic Configuration – Components Front 4 2 1 3 No. Name Power/Error indicator LED Description Different colors indicate different disk states: • • • • 1 Blue – Green – Orange – Red – Disk access Disk online Disk full No disk 2 Access indicator LED Indicates that the disk is being accessed. 3 Tray handle Releases the disk tray. 4 Push Button Push the button to release the Disk tray handle.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems ERQ12-U4R2 Rear View 3 4 Term 15 14 13 No. 12 11 Host Port 1 MODEM UPS 10 9 Name 8 7 6 5 Description 1 Cooling fan 1 System cooling fan 2 Host Port 2 (Primary SCSI channel) Connects to the host server. 3 Host Port 1 (Secondary SCSI channel) Connects to the host server. 4 Cooling fan 2 System cooling fan 5 Power Supply AC In Connects to a 100-240 VAC power source. 6 Power Supply 2 Removable redundant power supply 2.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems ERQ12-F2R2 Rear View 2 2 Basic Configuration – Components 1 3 Term 16 15 No. 14 13 12 4 5 MODEM UPS 11 10 9 Name 8 7 6 Description 1 Cooling fan 1 System cooling fan 2 Port select switch Selects speed for host ports 1 and 2: • Up – • Down – 1 Gbps 2 Gbps 3 Host Port 1 (Primary fibre channel) Connects to the host server. 4 Host Port 2 (Secondary fibre channel) Connects to the host server.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Installing Disks 2 Push the button (A) to release the disk tray handle. Pull the handle (B) to release the tray. A B 3 Align the rear of the disk with the rear of the disk tray. 4 Insert the disk into the disk tray and fix into place with screws supplied with the disk. 17 Basic Configuration – Installing Disks 1 Unlock the front panel door, then pull it open. 2 This section describes how to install disks in the disk array system.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems 5 Slide the disk tray back into the empty slot (A), then slowly close the disk tray handle (B). 2 Basic Configuration – Installing Disks B A 6 Repeat steps 2 to 5 until all of the required disks have been installed. 7 Push the front panel door closed, and lock it.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Making Connections The disk array system has either dual SCSI interfaces or dual fibre channel interfaces. Refer to the following sections to make host interface connections. Small Computer Systems Interface The ERQ12-U4R2 has dual Ultra320 SCSI interfaces. Follow these instructions to make connections. 1 Connect the SCSI terminator (A) to the bottom connector of the ERQ12-U4R2 host port 1 (primary SCSI channel) at the rear of the disk array system.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Fibre Channel Interface 2 Basic Configuration – Making Connections The ERQ12-F2R2 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 ERQ12-F2R2 host port 1 (primary fibre channel) at the rear of the disk array system.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Connecting a network Connect the network cable to the RJ-45 port at the rear of the unit.
ERQ12-U4R2 & ERQ12-F2R2 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). 2 Basic Configuration – Making Connections Note The system is equipped with auto switching power supplies that can run on 100 to 240 VAC. Fan 1 Power 1 B A 2 Switch on both power supplies.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Mounting in a Rack You will need four nuts and bolts (not included) for each rail; two at the front and two at the back. 4 Tighten the locking screws when they are the correct length. 5 Slide the disk array system into the rack and bolt it into place with the supplied fixing screws. Caution This product is heavy. Attempting to install the disk array system in a rack by yourself could result in injury or damage to the product.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Installing the Rail Extenders Follow these instructions to fit the rail extenders if required. 2 Basic Configuration – Mounting in a Rack 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. Note The rail extenders may be required to allow the disk array system room for the front door to open correctly.
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 tons on the front panel twice simultaneously. function but- The LCD panel displays the failure with the symbol “R” or “W”. “R” indicates a disk failure or error, and “W” indicates that there are too many bad sectors on the disk.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Replacing a Power Supply 3 Maintenance – 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. Note Turn off the audible alert by pressing the Up and Down tons on the front panel twice simultaneously.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems 4 Pull the power supply handle out. 3 oGGwGGY 1 5 Remove the faulty power supply by pulling the power supply handle and pressing the release catch. oGGwGGY Fan 1 Power 1 Release catch 6 Insert a new power supply. oGGwGGY Fan 1 Power 1 7 Push the power supply handle into place. 8 Tighten the power supply thumbscrew. oGGwGGY Fan 1 Power 9 Reconnect the power cable.
ERQ12-U4R2 & ERQ12-F2R2 Serial ATA Disk Array Systems Upgrading Memory 3 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. Maintenance – Upgrading Memory 1 Loosen the screws holding the controller cage in place. 2 Lift the handle and slide the controller-cage out of the chassis.
ERQ12-U4R2 & ERQ12-F2R2 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. 3 The DIMM module will fit in only one direction. Do not force the DIMM into place. 6 Replace the daughter board on the array group controller, taking care to align the connectors. 7 Push the disk controller back in, lower the handle, and tighten the retaining screws.
Appendix Hardware Specifications Item Specification Host Interface SCSI Ultra320 (ERQ12-U4R2) or Fibre Channel (ERQ12-F2R2) Disk Interface 12 x SATA, 150 MB/s Dimensions 88 mm (H) x 446 mm (W) x 498 mm (D) Weight 25 Kg without disks RAID Functions • • • • Raid levels: 0, 1, 0+1, 3, 5, 30, 50, JBOD, or NRAID Hot spare support Disk hot swapping with automatic online rebuilding Multiple RAID (max.
SA-7230 & SA-7231 Serial ATA Disk Array Systems Item Controller Appendix – Hardware Specifications Backplane Specification CPU Intel i80321 64-bit RISC microprocessor Disk Interface Serial ATA I Disk Channels 12 channels Disk Interface Chipset Marvell MV88SX8050 Memory Type PC200 DDR 200-pin SO-DIMM Memory Sockets 1 Memory Size Up to 1 GB LCD Interface One LCD panel, 2 lines by 16 characters Button Interface Up, Down, Enter, and ESC Battery Backup Interface Yes Daughter Board Interfac
