ATTO Technology SC 5700 operation manual RAID Level 0 striping, no redundancy

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RAID Level 0: striping, no redundancy

RAID Level 0 (striping) is based on the fact that increased performance can be achieved by simultaneously accessing data across multiple drives, increasing data transfer rates while reducing average access time by overlapping drive seeks. Drives are accessed alternately, as if stacked one on top of the

other. RAID Level 0 provides no data protection. If one drive fails, all data within that stripe set is lost.

RAID Level 0 is used by applications requiring high performance for non-critical data.

The ATTO FastStream supports 2 to 16 drives per RAID Level 0 group.

 

Disk 1

Disk 2

Disk 3

Disk 4

Stripe 1

Data 1

Data 2

Data 3

Data 4

Stripe 2

Data 5

Data 6

Data 7

Data 8

Stripe 3

Data 9

Data 10

Data 11

Data 12

 

RAID Level 1: mirroring (duplicate drives)

RAID Level 1 ensures the security of data by writing the exact same data simultaneously to two different drives. With RAID Level 1, the host sees what it believes to be a single physical drive of a specific size: it does not know about the mirrored pair.

This application is used for critical data which cannot be at risk to be lost or corrupted due to the failure of a single drive.

The ATTO FastStream supports an even number of 2 to16 drives per RAID Level 1 group.

Disk 1

Disk 2

Data 1

Data 1

Data 2

Data 2

Data 3

Data 3

RAID Level 1 plus additional mirroring

RAID Level 1 with multiple mirrors uses at least 3 drives with the same data on each drive. This application offers the highest fault-tolerance with good

performance, especially for small database applications.

RAID Level 1: additional mirror

Disk 1

Disk 2

Disk 3

Data 1

Data 1

Data 1

Data 2

Data 2

Data 2

Data 3

Data 3

Data 3

xx

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Contents FastStream SC Atto Technology, Inc Contents Scsi Enclosure Services SES Configure Storage into RAID GroupsMonitor Storage, Configurations Phone Home Email Alerts Drive DiagnosticsAppendix B Design RAID Groups Xix Manage Atto Devices, ConfigurationsAppendix E Warranty Xxvi Interface OptionsAdditional FastStream 5300 features FastStream 5000 Series featuresRAID protection features Audio/video featuresAdditional FastStream 5700 features Additional FastStream 5500 featuresFastStream SC 5300 Physical Attributes Exhibit 1.1-1 The connector side of the FastStream SC5300 SAS/SATA ports Reset/restore factory default switchOperating Temperature 5 C-40 C FastStream SC 5500 Physical AttributesLEDs on the faceplate are Cooling and airflow Fibre Channel ports FastStream SC 5700 Physical AttributesDo not block the enclosure’s vents. Page Setting up Internet Explorer Install the FastStream Storage ControllerUnpacking the packing box verifying contents Installing the FastStreamSelect Internet Options Beginning initial configurationUncheck the Require server verification check box Before creating RAID groups Ensure Drive IntegritySelect Initialize and Verify Drives After creating RAID groups Features you may choose Configure Storage into RAID GroupsAuto-Rebuild Preliminary steps Fault ToleranceSelecting an application InitializationClick Commit Quick Digital VideoAudio General Digital Video, General IT or DatabaseCreating a custom setup Page Page Changing system variables Changing current user name, passwordCreating a read-only user name, password Modify System ValuesWhen you have completed your changes, click on Commit Health and Status Monitor Monitor Storage, ConfigurationsHealth and Status Monitor page appears Scsi Enclosure Services SES Configuration DisplayConfiguration Click the Set up Error Notification buttonPhone Home Email Alerts Exhibit 6.1-1 The Error Notification Read only drive test Drive DiagnosticsClick the Read-Only Drive Test button Identifying a drive attached to the FastStream Drive performance and healthClick 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 buttonDeleting RAID groups Modify StorageRAID group processes Creating RAID groupsChanging RAID configuration RAID migration Adding mirrors to a RAID configurationAdding drives to a RAID group Click on the Modify RAID Group Mapping button Modifying RAID group mappingModifying RAID group partitions Rebuilding RAID groupsModifying RAID options FastStream process adding or removing Hot SparesSelect the Add/Remove Hot Spares button Advanced CLI Removing RAID configuration dataPage Appliance Name Manage Atto Devices, ConfigurationsCreating a unique name for your FastStream Discovering, managing other Atto devicesClick on the System Configuration Save/Restore button Saving or restoring a configurationInterface Options Using the ExpressNAV Storage ManagerEnter Using the serial portUsing Telnet Type FastStream in the New Connection dialog boxClick Upload Update FirmwarePage Appendix a CLI Provides an ASCII-based Interface Symbol/Abbreviation IndicatesCLI summary CLI error messagesIii Command Default ExampleIpdhcp Command Default Example AutoMap CLI command explanationsAutoResume BlockDevIdentify BlockDevCleanBoot Delay DefaultInterleaveDriveTest DriveTestConfigDumpConfiguration EmailPasswordEventLogFilter FCPortErrorsEthernetSpeed EventLogFCWWName FCPortListFCSCSIBusyStatus FCTargetsMetrics IPSubnetMaskIsReserved MaxOpTempRestoreConfiguration PasswordReadOnlyPassword ResetFCPortErrorsRGCreate RGCancelAddStorageRGAutoRebuild RGCommitRGResumeConversion RGWaitTimeoutRGPreFetch RGRebuildRouteDisplay SaveConfigurationRMStatus RouteSerialPortEcho SCSIPortResetSCSIPortResetOnStartup SerialPortBaudRateSESIdentify SESDiskFailureAlarmDefault disabled SESEnclosuresTimeZone TemperatureTailEventLog TimeJbod Just a Bunch of Disks Appendix B Design RAID GroupsDvraid Digital Video RAID RAID Level 1 mirroring duplicate drives RAID Level 0 striping, no redundancyRAID Level 1 plus additional mirroring RAID Level 4 striping, one parity drive RAID Level 1+0 striping, mirror spans two drivesRAID Level 5 striping, parity distributed among drives Disk Stripe Data Appendix C Scsi Cabling Connecting Scsi devices to Scsi portsCable types Max Bits Ended SupportDeclaration of Conformity Appendix D Standards and CompliancesManufacturer limited warranty Appendix E Warranty
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