ATTO Technology V-Class

RAID Level 0

Exhibit 5.2-4 A fully populated array may be configured in several different ways in RAID Level 0.

Contents

Main Contents Page 4.5.2 General Use Commands .............................................34 4.5.3 Fibre Channel Configuration Commands ..................35 4.5.4 Serial Port Configuration Commands ........................37 4.5.5 Ethernet Commands ....................................................39 4.5.6 Diagnostic Commands ................................................41 4.5.7 Drive Configuration Commands .................................43 4.5.8 Maintenance Services Commands .............................48 5.0 Configuring Drives ..........................................................................49 5.1 JBOD .....................................................................................51 5.2 RAID Level 0 .........................................................................52 5.3 RAID Level 1 .........................................................................55 Page Page Page Preface Disclaimer Page 1 1.0 Product Overview Features 2 Fibre Channel model SCSI model 3 2.0 Technical Overview ATA disk drives ADXT Powers ATA to New Levels 3.0 Installation Instructions Page 3.1 Components Page 3.2 Physical Setup 10 Physical setup centermost mounting holes and secured using 10/32 screws. General Instructions Connecting a Fibre Channel Array Connecting a SCSI Array 3.2.1 Connecting a Fibre Channel Array 12 Fibre Channel connections 13 3.2.2 Connecting a SCSI Array Page 3.3 Determining Drive and Sled Designations Page 4.0 Accessing the Array Page 4.1 In-band CLI Over Fibre Channel Page 21 4.2 Serial Port Access Page 23 4.3 Ethernet Access: Telnet and SNMP Protocols 24 Ethernet protocols 4.4 ATTO ExpressNAV: Browser-based Interface Page 4.4.1 ExpressNAV Pages Page 4.5 CLI: Interface via ASCII-based Commands 30 Command Line Interface 31 4.5.1 Summary of CLI Commands Page Page 4.5.2 General Use Commands The following commands, listed alphabetically, describe or perform general functions. 35 4.5.3 Fibre Channel Configuration Commands Page 37 4.5.4 Serial Port Configuration Commands The serial port configuration may be customized by using the following comm ands: Page 39 4.5.5 Ethernet Commands The Telnet and SNMP protocols also use CLI commands. 41 4.5.6 Diagnostic Commands Page 43 4.5.7 Drive Configuration Commands Page Page Page Page 4.5.8 Maintenance Services Commands Maintenance commands allow updating and maintenance of the Diamond Storage Array. 49 5.0 Configuring Drives JBOD (Just a Bunch of Disks) RAID Level 0 RAID Level 1 RAID Level 10 Interleave Partitions Zones Hot Spare sleds Enhancing performance 5.1 JBOD 5.2 RAID Level 0 Sled-based versus disk-based 24 physical drives RAID 0 subsystem example: 4 Virtual Drives Page 5.3 RAID Level 1 56 RAID Level 1 ATTO ExpressNAV: Browser-based Interface *. 5.4 RAID Level 5 58 RAID Level 5 Accessing the Array 59 sleds, encompassing all the available sleds by using the CLI command 60 RAID Level 5 Accessing the Array Removing RAID groups Accessing the Array ATTO ExpressNAV: Browser-based Interface 5.5 RAID Level 10 62 RAID Level 10 Accessing the Array QuickRAID10 3 = LUN 1 QuickRAID10 2 = LUN 1 QuickRAID10 5.6 Rebuilding RAID Level Configurations You must use a SaveConfiguration Restart RAIDRebuildStatus command to implement the rebuild priority command. To synchronize mirrored drives manually 5.7 RAID Interleave Page 5.8 Creating Partitions 68 Partitions RAID Level 10 PartitionCommit PartitionInfo [planned] PartitionInfo [active] 5.9 Creating Zones Page 71 Diamond Storage Array ZoneRetrieve a. Refer to ZoneClearAll ZoneInfo Planned ZoneAdd ZoneCreate Page 6.0 Copying Drives Page 75 7.0 Updating Firmware ....ima Resetting Defaults Accessing the Array on page 17) via the RS-232 serial port or the optional Ethernet management services card. 76 Update firmware Resetting Defaults 8.0 System Monitoring and Reporting Page Page Page 8.1 Troubleshooting Management 82 Troubleshooting or use the appropriate CLI commands SaveConfiguration 8.2 Resetting Defaults in CLI mode or in the Advanced CLI configuration page of the ExpressNAV interface. Return to Default settings RestoreConfiguration default Page 9.0 Hardware Maintenance 86 Hardware maintenance CAUTIONCAUTION 87 9.1 Hot Swap Operating Instructions Accessing the Array WARNING on page 43). The following method is the safest way to perform a hot swap of a drive Power Supplies Blower Assemblies 9.2 Optional Hot Spare Sled LUN 1 LUN 1 LUN 2 i Glossary Fibre Channel technology SAN technology SCSI protocol ii iii Appendix A ATA Disk Technology iv Appendix B Information command returns . .. ... Driveinfo v ..................... vi LUNInfo . vii ... .... viii PartitionInfo ix .... ....... = .... ..... Appendix C Sample Zoning Command Sequences First time configuration (after download) Simple Symmetric Model xi Asymmetric Model 3 hosts, 1 metadata controller (also a host), RAID 5 with 3 LUNs. All zone commands except affect only the planned configuration. Combined Symmetric/Asymmetric Model xiii Appendix D Product Safety Safety compliances EMC specifications Radio and television interference xiv Appendix E Specifications Environmental and physical Rack mount dimensions Floor mount dimensions xv Appendix F Part numbers *All parts UL recognized Appendix G Warranty Manufacturer limited warranty Contact ATTO Technology, Inc.