ATTO Technology VT-Class manual Adxt Powers ATA to New Levels

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ADXT Powers ATA to New Levels

The original notion of RAID was to build high

Interface Engines (AIE) organize data streams for

capacity, reliable storage subsystems using large

storage or retrieval.

numbers of inexpensive disk drives. Thus its

Virtual Drive Manager Data is accessed through

original definition: Redundant Array of

Virtual Drives using an implementation of the

Inexpensive Drives. Over time that definition

standard SCSI protocol controlled by the Virtual

became Redundant Array of Independent Drives

Device Manager. The VDM adds capabilities

and the inherent cost advantage in a RAID system

such as RAID, data management services,

was lost. The Diamond Series provides a high

enclosure management services, serverless

capacity, high performance and highly reliable

backup, data replication using SCSI Extended

disk array that uses the merged power of many

Copy and LUN mapping.

inexpensive ATA disk drives.

Data Routing Fabric Incoming or outgoing data is

Intelligent Midplane The heart of the Diamond

routed between the ATA Interface Engines (AIE)

Series storage array is the intelligent midplane

and the Fibre Channel or SCSI interface by the

with ADXT to sum or aggregate the data rates of

custom Data Routing Fabric ASIC, a high speed,

individual ATA disk drives to create high data

low latency transfer fabric with more than 2

transfer rates. This technology enables features

GB/sec. of bandwidth supported by up to 512

such as serverless backup, advanced error

Megabytes of memory.

protection, metadata storage techniques,

ATA Interface Engine (AIE) The interface to each

virtualization software, thermal management and

pair of drives is through a custom ATA Interface

advanced enclosure services.

Engine ASIC. The AIE implements the typically

The midplane contains a combination of custom

software-intensive ATA interface completely in

Application Specific Integrated Circuits (ASICs),

silicon. Each AIE contains a dedicated ATA

processors and proprietary embedded software. It

protocol processor to completely automate

is divided into three main processing sections

command and protocol processing. Automated

which handle the data being read or written to the

command overlapping and queuing maximizes

ATA disk drives from the Fibre Channel or SCSI

the performance of multi-threaded I/O. The AIE

host interfaces. The Virtual Device Manager

transfers data using double-clocking technology

(VDM), Data Routing Fabric (DRF) and ATA

at 66 megabytes per second. The Diamond-VT

contains 12 AIEs for a parallel transfer rate of 792

megabytes per second. In

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

addition to guaranteeing

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

data transfer integrity with

AIE 1

AIE 2

AIE 3

AIE 4

AIE 5

AIE 6

AIE 7

AIE 8

AIE 9

AIE 10

AIE 11

AIE 12

automatic CRC checking,

the command and status

DATA ROUTING FABRIC

transfers are validated

using a patent pending

text

technology unique to the

AIE.

VIRTUAL DEVICE MANAGER

FIBRECHANNEL INTERFACE 1

FIBRECHANNEL INTERFACE 2

4 Technical overview

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Contents Diamond Storage Array VT-Class Page Page Contents ExpressNAV Pages Atto ExpressNAV Browser-based InterfaceDiagnostic Commands Fibre Channel Configuration CommandsSerial Port Configuration Commands Maintenance Services CommandsECC Drive Management CommandsVirtual Tape Configuring the Diamond-VTDiagnostics, Upgrade and Maintenance Troubleshooting Resetting DefaultsAppendix G Part numbers Xiv Appendix H Warranty Appendix D Sample Zoning Command SequencesAppendix E Specifications Xii Appendix F Product Safety XiiiPreface DisclaimerAtto Technology, Inc Page Diamond Storage Array-VT Product Overview Diamond-VT featuresScsi model Fibre Channel model400MB/sec Diamond-VT Technical OverviewRS-232 EthernetATA Interface Engine AIE The interface to each Adxt Powers ATA to New LevelsConnect to Ethernet Installation InstructionsPhysical setup Set up the Ethernet connectionRAID Level 10 with Hot Spare sleds Set up Virtual Tape configurationConfiguration examples Connect to Ethernet, on page 5, followFloor model Diamond-VT ComponentsRack mount model Diamond-VT Physical Setup Floor ModelRack Mount Physical setup Connecting a Fibre Channel Array AutoconfigurationManual configuration Fibre Channel connections Bits Connecting a Scsi ArrayTo connect the Scsi Diamond-VT Bus speed, MB/sec Bus width Max. bus lengths Max. deviceScsi connections RS-232 port Accessing the Diamond-VTCommand Line Interface Atto ExpressNAVSnmp In-band CLI Over Fibre Channel DetailsInitiator Host Diamond-VT Initiator/Host Diamond-VT Serial Port Access Serial port access To use Snmp Ethernet Access Telnet and Snmp ProtocolsTo connect to the Ethernet port To use TelnetTraps are generated for the following situations Atto ExpressNAV Browser-based Interface Navigating ExpressNAVBrowser compatibility Parameter name Submit button Reset buttonExpressNAV Pages Partitions Tape VolumesConfiguration Logical UnitsCLI Interface via ASCII-based Commands SaveConfiguration commandReady Hostname Return type/mode Return format/contentCommand Defaults Example Summary of CLI CommandsCLI index Zoneaddhost zone1 General Use Commands Ethernet Commands SNMPTraps SNMPUpdatesTelnetPassword TelnetTimeoutFibre Channel Configuration Commands FcWWName FcPortListFcPortName FcScsiBusyStatusSerialPortEcho Serial Port Configuration CommandsSerialPortBaudRate SerialPortHandshakeMaintenance Services Commands Diagnostic Commands RAID5ClearDataStatus PowerAudibleAlarmSledFaultLED TapeVolumeInfoDrive Management Commands IdeWriteCache DriveWipeLUNState IdeTransferRateRAIDManualRebuild RAID5ClearDataRAIDInterleave RAIDHaltRebuildTapeWriteProtect RestoreModePagesTapeVolumeBlockSize RebuildPriorityZoneRemoveDevice ZoneClearAllZoneCreate ZoneDeleteCLI configure drives Hot Spare sleds Configuring the Diamond-VTVirtual Tape Volumes RAID LevelEnhancing performance InterleaveVirtual Tape Optional Hot Spare Sled To set up RAID Level 10 with Hot Spare sledsDevice portion defines the LUNs Planned configuration is a work-in-processZones Principles of ZoningFactors to consider Status and Sense DataType ZoneInfo To change current zones Configuring ZoningTo create a zone To remove zonesZone definition tables The Zone commands ErrorsUpdating Firmware Updating firmware via the RS-232 serial portUpdating firmware via the optional Ethernet card Type put ....ima Cd c\diamond\flashEthernet Monitoring Port and CLI If the optional Diagnostics, Upgrade and MaintenancePower On Self Test Post Each time RS-232 Monitoring Port and CLI One tool toPower Supply Monitoring The Diamond-VT System Fault LED and Error Codes If a serious25C 32C 35C 40C Disk Drive Activity and Disk Fault LEDs Each Monitoring, reporting Specific situations and suggestions TroubleshootingWindows 2000 special instructions Error Messages Command Line Interface messagesType FirmwareRestart in CLI If a power supply failsIf you can’t access the Diamond-VT CLI via Ethernet If you cannot read or write to the Diamond-VTReturn to Default settings Resetting DefaultsFactory Default DefaultCommand Default Rebuilding RAID Level 5 and 10 Configurations To synchronize mirrored drives manually Hardware Maintenance Hardware maintenance Disk Drives Hot Swap Operating InstructionsPower Supplies To replace a blower assemblyBlower Assemblies Scsi protocol Appendix a GlossaryFibre Channel technology SAN technologyAppendix Feature Appendix B ATA Disk TechnologyFibre Channel Appendix C LunInfo for a Jbod setup PartitionInfo active 59 LunInfoZoneInfo TapeVolumeInfoViii Symmetric Model Appendix D Sample Zoning Command SequencesFirst time configuration after download Simple configurationZoneAddPort zone2 ZoneCreate zone3 Asymmetric ModelZoneClearAll ZoneCreate zone1 ZoneAddPort zone1 ZoneCreate zone2Combined Symmetric/Asymmetric Model Environmental and physical Appendix E SpecificationsRack Mount Dimensions Floor Mount DimensionsRadio and television interference Appendix F Product SafetySafety compliances EMC specificationsDescription All models Appendix G Part numbersAppendix H Warranty Manufacturer limited warrantyContact Atto Technology, Inc