ATTO Technology S-Class manual Interleave, Hot Spare sleds, Enhancing performance

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RAID Level 10 is used in applications requiring high performance and redundancy, combining the attributes of RAID Levels 1 and 0.

The QuickRAID10 command, accessed through the Command Line Interface, allows a simple, out-of-the-box setup of RAID Level 10 groups.

The array will operate in degraded mode if a drive fails unless you have enabled Hot Spare sleds.

RAID Level 5

RAID Level 5 increases reliability while using fewer disks than mirroring by employing parity redundancy. Distributed parity on multiple drives provides the redundancy to rebuild a failed drive from the remaining good drives. Parity data is added to the transmitted data at one end of the transaction, then the parity data is checked at the other end to make sure the transmission has not had any errors.

In the array, transmitted data with the added parity data is striped across disk drives. A hardware XOR engine computes parity, thus alleviating software processing during reads and writes.

The array will operate in degraded mode if a drive fails unless you have enabled Hot Spare sleds.

Interleave

The interleave size sets the amount of data to be written to each drive in a RAID group. This is a tunable parameter which takes a single stream of data and breaks it up to use multiple disks per I/O interval.

The CLI command RAIDInterleave allows you to change the size of the sector interleave between RAID groups. The value will depend upon the normal expected file transfer size. If the normal

file transfer size is large, the interleave value should be large, and vice versa.

The value entered for the RAIDInterleave command refers to blocks of data: one block is equivalent to 512 bytes of data.

Valid entries are 16, 32, 64, 128, 256 and SPAN. SPAN, not available in RAID Level 5, indicates that interleave size between the drives in the group will be the minimum drive size of all members in the group.

Hot Spare sleds

In most configurations, if a member of a virtual device becomes degraded, you must swap out the faulted sled as defined in Hot Swap Operating Instructions on page 71. If you have not enabled AutoRebuild, you must also start a manual rebuild.

For four configurations, however, Hot Spare sleds may be designated as replacements for faulted sleds without intervention by you or a host.

Each configuration requires a certain number of Hot Spare sleds. These sleds, once designated as Hot Spares, are not available for other use.

The following configurations will support optional Hot Spare sleds

RAID Level 1: 2 Hot Spare sleds

RAID Level 10: 1 group, 2 Hot Spare sleds

RAID Level 5: 1 group, 1 Hot Spare sled

RAID Level 5: 2 groups, 2 Hot Spare sleds

Enhancing performance

SpeedWrite, enabled by the CLI command SpeedWrite, improves the performance of WRITE commands

50 Configuring drives

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Contents Diamond Storage Array Class Page Page Contents In-band CLI Over the Fibre Channel Serial Port Configuration Commands Configuring Drives RAID Interleave Parameters Appendix E Warranty Viii Appendix D Specifications ViiAtto Technology, Inc PrefacePage Diamond Storage Array Product Overview Diamond Storage Array featuresScsi model Fibre Channel modelDiamond Storage Array Technical Overview Adxt Powers ATA to New LevelsATA Interface Engine AIE The interface to each Physical setup Installation InstructionsSet up the Ethernet connection Connect to EthernetSet up RAID configuration Floor model ComponentsRack mount Components Spaced rail pairs in some rackmount cabinets Physical Set UpRack mount cabinets with stationary shelf or tray Sliding shelf or tray type systems should neverGeneral instructions Autoconfiguration Connecting a Fibre Channel ArrayManual configuration Fibre Channel connections To connect a Scsi array Connecting a Scsi ArrayBus speed, MB/sec Bus width Max. bus lengths Max. device BitsScsi connections Physical numbering Determining Drive and Sled DesignationsLogical numbering Numbering conventionsUnique serial number for each LUN ExamplesRAID Level 10 QuickRAID10 The QuickRAID10 RAID Level 5 QuickRAID5 with a fullyCommand Line Interface Accessing the ArrayAtto ExpressNAV RS-232 portSnmp Details In-band CLI Over the Fibre ChannelInitiator Host Diamond Array Initiator/Host Diamond Storage Array Invalidparameterincdb will be returnedSerial Port Access Serial port access To connect to the Ethernet port Ethernet Access Telnet and Snmp ProtocolsTo use Telnet To use SnmpTraps are generated for the following situations Type SaveConfiguration restart to reboot the arrayBrowser compatibility Atto ExpressNAV Browser-based InterfaceOpening an ExpressNAV session Navigating ExpressNAVInformation Sidebar ExpressNAV Pages Clear Data ConfigurationLogical Units RebuildCommand Line Interface actions and responses Command Line Interface Use and GuidancePage Command Defaults Example Summary of CLI CommandsCommand Defaults Example General Use Commands General CLI commands Ethernet Commands TelnetTimeout TelnetPasswordTelnetUsername Fibre Channel Configuration Commands FcPortList FcPortInfoFcPortName FcWWNameSerialPortBaudRate Serial Port Configuration CommandsSerialPortHandshake SerialPortEchoSerial port CLI commands Diagnostic Commands Temperature SledFaultLEDSMARTData VirtualDriveInfoFcScsiBusyStatus Maintenance CommandsMaxEnclTempAlrm MinEnclTempAlrmMaintenance CLI commands Drive Configuration Commands IdeTransferRate DriveWipeLUNState QuickRAID0RAID5ClearData RestoreModePagesRAID5ClearDataStatus RAIDInterleaveExamples, refer to Information Commands Results on Jbod Just a Bunch of Disks Configuring DrivesRAID Level Hot Spare sleds InterleaveEnhancing performance Jbod To set up the Jbod configurationJbod Sled-based versus disk-based RAID LevelLUNs virtual drive numbers To remove RAID Level 0 groupsPage Page Type SaveConfiguration To set up RAID Level 1 groupsType SaveConfiguration Storage Management To remove RAID groupsType set QuickRAID 1 To set up RAID Level 1 with Hot Spare sledsTo set up RAID Level 5 groups Configuring a fully-populated arrayTo set up one RAID Level 5 group with one Hot Spare sled To set up two RAID Level 5 groups with two Hot Spare sleds Type set QuickRAID5 1 Type SaveConfiguration RestartType set QuickRAID5 2 Type SaveConfiguration Restart LUN Removing RAID groups Type set QuickRAID5 ALL Type SaveConfiguration RestartType set QuickRAID10 0 1 2 To set up RAID Level 10 groupsType set QuickRAID10 1 Type SaveConfiguration Restart To set up RAID Level 10 with Hot Spare sledsRebuilding RAID Configurations To synchronize mirrored drives manually Set AutoRebuild disabled saveconfiguration restartTo change the RAID Interleave parameter RAID Interleave ParametersRAID interleave Hardware Maintenance Maintenance Disk drives Hot Swap Operating InstructionsTo replace a blower assembly Power suppliesBlower assemblies Optional Hot Spare Sled Type set QuickRAID1 Type SaveConfiguration RestartVirtual Drive Hot Spare sleds To set up two RAID Level 5 groups with Hot Spare sledsCopying Drives ProcedureCopy drives Updating Firmware Updating firmware using the RS-232 serial portType put ....ima Cd c\diamond\flashSystem Monitoring and Reporting System fault LED and error codes Power supply monitoringNumber of blinks Windows 2000 special instructions Error messages TroubleshootingCommand Line Interface messages Specific situations and suggestions Type FirmwareRestart If LUNs do not display on the hostDefault Resetting DefaultsFactory Default To return to Default settingsCommand Default Reset if default Reset during Chosen Fibre Channel FeatureDriveInfo sled ID drive ID Appendix B Information Commands ResultsV80DTESC Info allLunInfo LUNInfo LUNVirtualDriveInfo VirtualDriveInfo active planned Virtual Drive IDRadio and television interference Safety compliances EMC specificationsFloor mount dimensions Rack mount dimensionsEnvironmental and physical Contact Atto Technology, Inc Manufacturer limited warranty

S-Class specifications

ATTO Technology S-Class is a comprehensive solution designed to optimize storage and networking performance for digital content creation and enterprise environments. This product line specializes in high-performance connectivity, facilitating seamless data transfer and management.

One of the key features of the S-Class is its advanced RAID (Redundant Array of Independent Disks) capabilities. This incorporates various levels of RAID configurations, enabling users to choose the right balance between performance and redundancy. The technology ensures data integrity while maximizing throughput, a crucial aspect for workflows dealing with large files such as video editing and graphic design.

Another standout characteristic of the S-Class is its support for high-speed interfaces, including Thunderbolt and Fibre Channel. With the ability to leverage these high-bandwidth connections, users can achieve exceptional data transfer rates that significantly reduce the time required for file uploads and transfers. This is particularly important in environments demanding real-time data access, such as broadcasting and production studios.

The S-Class also incorporates intelligent storage management features. The ATTO ConfigTool offers a user-friendly interface for monitoring and configuring storage settings, allowing for real-time adjustments and performance tuning. This ensures that users can effectively manage their storage resources, balancing capacity and performance according to their specific needs.

Furthermore, the technology employs a robust set of data protection mechanisms, including snapshot and backup capabilities. This ensures that critical data is safeguarded against potential loss, enhancing operational reliability. The integration of these features supports comprehensive workflow solutions, benefiting industries that require continuous access to high-volume data.

Lastly, the S-Class is built to integrate seamlessly with popular operating systems and platforms, providing versatility and ease of deployment. Whether used in a small studio or a large enterprise environment, ATTO Technology's S-Class stands out as a solution that combines speed, reliability, and manageable performance, making it a top choice for professionals who demand the best in their storage and network infrastructure.

In summary, ATTO Technology S-Class is not just a storage solution; it's a gateway to unlocking peak performance in data management, tailored for the challenges of today’s data-driven landscape.
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