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ATTO Technology SC 5700 operation manual Disk Stripe Data

Models: SC 5700

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RAID Level 6: striping, two parity blocks distributed among drives

RAID Level 6 increases reliability for mission critical applications by striping both data and dual parity across multiple drives, writing data and parity blocks across all the drives in a RAID group. RAID 6 provides

can tolerate failure of two drives and provides redundancy during rebuilds.

The ATTO FastStream requires at least four drives to build a RAID 6 group. Two drives per RAID group are used for parity protection and are unavailable for data.

	Disk 1	Disk 2	Disk 3	Disk 4	Disk 5
Stripe 1	Data 1	Data 2	Data 3	Parity 1-3	Parity 1-3
Stripe 2
	Data 5	Data 6	Parity 4-6	Parity 4-6	Data 4
Stripe 3
	Data 9	Parity 7-9	Parity 7-9	Data 7	Data 8
Stripe 4
	Parity 10-12	Parity 10-12	Data 10	Data 11	Data 12

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ATTO Technology SC 5700 operation manual Disk Stripe Data

Contents

FastStream SC Atto Technology, Inc Contents Monitor Storage, Configurations Configure Storage into RAID GroupsPhone Home Email Alerts Drive Diagnostics Scsi Enclosure Services SESAppendix E Warranty Xxvi Manage Atto Devices, ConfigurationsInterface Options Appendix B Design RAID Groups XixRAID protection features FastStream 5000 Series featuresAudio/video features Additional FastStream 5300 featuresAdditional FastStream 5700 features Additional FastStream 5500 featuresFastStream SC 5300 Physical Attributes Exhibit 1.1-1 The connector side of the FastStream SC5300 Operating Temperature 5 C-40 C Reset/restore factory default switchFastStream SC 5500 Physical Attributes SAS/SATA portsLEDs on the faceplate are FastStream SC 5700 Physical Attributes Cooling and airflow Fibre Channel portsDo not block the enclosure’s vents. Page Unpacking the packing box verifying contents Install the FastStream Storage ControllerInstalling the FastStream Setting up Internet ExplorerBeginning initial configuration Select Internet OptionsUncheck the Require server verification check box Ensure Drive Integrity Before creating RAID groupsSelect Initialize and Verify Drives After creating RAID groups Configure Storage into RAID Groups Features you may chooseAuto-Rebuild Selecting an application Fault ToleranceInitialization Preliminary stepsAudio Quick Digital VideoGeneral Digital Video, General IT or Database Click CommitCreating a custom setup Page Page Creating a read-only user name, password Changing current user name, passwordModify System Values Changing system variablesWhen you have completed your changes, click on Commit Monitor Storage, Configurations Health and Status MonitorHealth and Status Monitor page appears Scsi Enclosure Services SES Configuration DisplayClick the Set up Error Notification button ConfigurationPhone Home Email Alerts Exhibit 6.1-1 The Error Notification Drive Diagnostics Read only drive testClick the Read-Only Drive Test button Drive performance and health Identifying a drive attached to the FastStreamClick on Identify Drive Setting up SES Scsi Enclosure Services SESIdentifying SES elements Use the Health and Status Monitor Monitoring SES elementsUse the Manage menu Select the Monitor Enclosure Services buttonRAID group processes Modify StorageCreating RAID groups Deleting RAID groupsAdding mirrors to a RAID configuration Changing RAID configuration RAID migrationAdding drives to a RAID group Modifying RAID group partitions Modifying RAID group mappingRebuilding RAID groups Click on the Modify RAID Group Mapping buttonFastStream process adding or removing Hot Spares Modifying RAID optionsSelect the Add/Remove Hot Spares button Advanced CLI Removing RAID configuration dataPage Creating a unique name for your FastStream Manage Atto Devices, ConfigurationsDiscovering, managing other Atto devices Appliance NameClick on the System Configuration Save/Restore button Saving or restoring a configurationInterface Options Using the ExpressNAV Storage ManagerUsing Telnet Using the serial portType FastStream in the New Connection dialog box EnterClick Upload Update FirmwarePage Appendix a CLI Provides an ASCII-based Interface Symbol/Abbreviation IndicatesCLI summary CLI error messagesIii Command Default ExampleIpdhcp Command Default Example CLI command explanations AutoMapAutoResume Boot Delay BlockDevCleanDefaultInterleave BlockDevIdentifyDumpConfiguration DriveTestConfigEmailPassword DriveTestEthernetSpeed FCPortErrorsEventLog EventLogFilterFCSCSIBusyStatus FCPortListFCTargets FCWWNameIsReserved IPSubnetMaskMaxOpTemp MetricsReadOnlyPassword PasswordResetFCPortErrors RestoreConfigurationRGAutoRebuild RGCancelAddStorageRGCommit RGCreateRGPreFetch RGWaitTimeoutRGRebuild RGResumeConversionRMStatus SaveConfigurationRoute RouteDisplaySCSIPortResetOnStartup SCSIPortResetSerialPortBaudRate SerialPortEchoDefault disabled SESDiskFailureAlarmSESEnclosures SESIdentifyTailEventLog TemperatureTime TimeZoneAppendix B Design RAID Groups Jbod Just a Bunch of DisksDvraid Digital Video RAID RAID Level 0 striping, no redundancy RAID Level 1 mirroring duplicate drivesRAID Level 1 plus additional mirroring RAID Level 1+0 striping, mirror spans two drives RAID Level 4 striping, one parity driveRAID Level 5 striping, parity distributed among drives Disk Stripe Data Connecting Scsi devices to Scsi ports Appendix C Scsi CablingCable types Max Bits Ended SupportDeclaration of Conformity Appendix D Standards and CompliancesManufacturer limited warranty Appendix E Warranty

Disk 1

Stripe 1

Data 1