ATTO Technology VT-Class manual Appendix

Page 83

Term

Definition

F_port

A port in the FC fabric where a N_port may attach

FC-AL

Fibre Channel Arbitrated Loop: an FC network in which up to 126 systems and devices are

 

connected in a loop topology, with each transmitter connecting to the receiver of the device

 

to its logical right; multiple FC-AL loops can be connected via a fabric switch

FL-port

A port in the FC fabric where a NL_port may attach in an arbitrated loop

firmware

Software stored in read-only memory (ROM) or programmable ROM; easier to change than

 

hardware but more difficult to change than software stored on disk; firmware is responsible

 

for the behavior of the system when it is first switched on

GBIC

A removable serial transceiver module which provides a connection between an external

 

FC interface and a host interface board

host

a processor which communicates with devices over an interface

hot swapping

Components are removed and replaced while the unit is running, with power to either the

 

component or a device connected to the unit

initiator device

A component which originates a command

JBOD

Just a Bunch of Disks: a storage subsystem of multiple independent disk drives

L_port

a port in an arbitrated loop, either a NL_port or a FL_port

LED

Light-emitting diode, a type of diode that emits light when current passes through it; visible

 

LEDs are used as indicator lights on the Diamond-VT

LUN

Logical Unit Number: a SCSI or FC identifier of a device. A LUN is associated with a RAID

 

group or Virtual Drive.

N_port

a port attached to a node used with point to point or fabric configurations

NL_ port

a port attached to a node in FC arbitrated loop or fabric loop

originator

an initiating device; a component which originates a command

partition

a continuous range of addresses in a storage subsystem that appear as a logical unit; used

 

to subdivide and manage a storage subsystem

port

an access point in a device: see N_port, NL_port, etc.

receiver

the ultimate destination of data transmission; a terminal device

RAID

originally Redundant Array of Inexpensive Disks, now Redundant Array of Independent

 

Drives: a storage system spanning multiple disk drives.

 

The following standard RAID specifications will be used here:

 

RAID 0: non-redundant striped array; drives are accessed alternately, as if stacked one on

 

top of the other; no data protection

 

RAID 1: mirrored arrays: information written to one disk is also written to another

 

simultaneously; provides complete data protection

 

RAID 10: striping of mirrored groups

 

RAID 5: striping across multiple disks offering redundancy by including a parity block in

 

every stripe; the parity block is used to reconstruct the data if a single drive in the

 

subsystem fails

SFP

Small Formfactor Pluggable: a removable transceiver which provides the connection

 

between an external FC interface and a host interface

subpartition

a convenient term used to describe the allocation nature of a partition; a partition may be

 

split into a number of subpartitions (each a partition in its own right) and a collection of

 

contiguous subpartitions may be merged into a partition

topology

logical layout of the parts of a computer system or network and their interconnections

Virtual Drive

the presentation of a collection of disk drives as a single logical disk, also known as a RAID group.

Virtual Drive ID

a unique identifier associated with each Virtual Drive and displayed via CLI

A-ii

Appendix

Image 83
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 XiiiAtto Technology, Inc PrefaceDisclaimer 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 Rack Mount Diamond-VT Physical SetupFloor Model Physical setup Manual configuration Connecting a Fibre Channel ArrayAutoconfiguration 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 Initiator Host Diamond-VT In-band CLI Over Fibre ChannelDetails 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 Browser compatibility Atto ExpressNAV Browser-based InterfaceNavigating ExpressNAV Parameter name Submit button Reset buttonExpressNAV Pages Partitions Tape VolumesConfiguration Logical UnitsReady CLI Interface via ASCII-based CommandsSaveConfiguration command 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 ZoningType ZoneInfo Factors to considerStatus and Sense Data To change current zones Configuring ZoningTo create a zone To remove zonesZone definition tables The Zone commands ErrorsUpdating firmware via the optional Ethernet card Updating FirmwareUpdating firmware via the RS-232 serial port 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 to25C 32C 35C 40C Power Supply Monitoring The Diamond-VTSystem Fault LED and Error Codes If a serious 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 InstructionsBlower Assemblies Power SuppliesTo replace a blower assembly Scsi protocol Appendix a GlossaryFibre Channel technology SAN technologyAppendix Fibre Channel FeatureAppendix B ATA Disk Technology 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 numbersContact Atto Technology, Inc Appendix H WarrantyManufacturer limited warranty