Seagate ST3450757SS, 100516226 Interface Requirements, SAS Features, Task management functions

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11.0INTERFACE REQUIREMENTS

This section partially describes the interface requirements as implemented on Cheetah 15K.7 drives. Additional information is provided in the SAS Interface Manual (part number 100293071).

11.1SAS FEATURES

This section lists the SAS-specific features supported by Cheetah 15K.7 drives.

11.1.1task management functions

Table 7 lists the SAS task management functions supported.

Table 7 SAS task management functions supported

TASK NAME	SUPPORTED

Abort Task	Yes

Clear ACA	Yes

Clear task set	Yes

Abort task set	Yes

Logical Unit Reset	Yes

Query Task	Yes

11.1.2task management responses

Table 8 lists the SAS response codes returned for task management functions supported.

Table 8 Task management response codes

FUNCTION NAME	RESPONSE CODE

Function complete	00

Invalid frame	02

Function not supported	04

Function failed	05

Function succeeded	08

Invalid logical unit	09

11.2DUAL PORT SUPPORT

Cheetah 15K.7 SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address.

The two ports have the capability of independent port clocking (e.g. both ports can run at 6Gbit/sec or the first port can run at 6Gbit/sec while the second port runs at 3Gbit/sec.) The supported link rates are 1.5, 3.0, or 6.0 Gbits/sec.

Subject to buffer availability, the Cheetah 15K.7 drives support:

•Concurrent port transfers—The drive supports receiving COMMAND, TASK management transfers on both ports at the same time.

Full duplex—The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving frames on both ports.

CHEETAH 15K.7 SAS PRODUCT MANUAL, REV. F

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Contents SED Fips 140-2 models Standard models Self-Encrypting Drive modelsPage Contents Interface Requirements Defect and Error ManagementInstallation About Fips About SELF-ENCRYPTING DrivesCheetah 15K.7 SAS Product MANUAL, REV. F III Seagate Technology Support Services Fips 140-2 L Evel ScopeSED Standards STANDARDS, Compliance and Reference DocumentsCompliance European Union Restriction of Hazardous Substances Rohs Australian C-TickKorean KCC Taiwanese BsmiGeneral Description Media Description Standard FeaturesPerformance ST3600057SS ST3450857SS ST3300657FC FACTORY-INSTALLED OptionsReliability Formatted CapacitiesFormat command execution time minutes Performance CharacteristicsInternal Drive Characteristics Access timeSTART/STOP Time General performance characteristicsPREFETCH/MULTI-SEGMENTED Cache Control Cache Operation Prefetch operation Caching write dataError Rates Reliability SpecificationsReliability and Service Controlling S.M.A.R.T Preventive maintenanceHot plugging the drive 4 S.M.A.R.TDetermining rate Performance impactMilliseconds Reporting controlDST failure definition Temperature Log Page 0DhParameter Code Description Drive Self Test DSTShort and extended tests State of the drive prior to testingImplementation Invoking DSTShipping Product warrantyLog page entries Abort600 GB DC power requirements PHYSICAL/ELECTRICAL SpecificationsAC Power Requirements DC Power Requirements450 GB DC power requirements 300 GB DC power requirements Conducted noise immunity Power sequencingCurrent profiles Typical 450GB current profiles Power Dissipation 300GB model Temperature a. OperatingEnvironmental Limits Effective altitude sea level a. Operating Relative humidityShock Shock and vibrationRecommended mounting VibrationRoHS compliance statement Air cleanlinessAcoustics Corrosive environmentUnits of Measure mm inches Mechanical SpecificationsValidation Program PurposeSeagate Enterprise SED Random Number Generator RNG Controlled AccessAbout SELF-ENCRYPTING Drives Data EncryptionDrive Locking Authenticated Firmware DownloadPower Requirements Supported CommandsDrive Internal DEFECTS/ERRORS Defect and Error ManagementDrive Error Recovery Procedures Read and write retry count maximum recovery times SAS System ErrorsIdle Read After Write Background Media ScanMedia PRE-SCAN Deferred AUTO-REALLOCATIONDrive Orientation InstallationCooling Grounding Drive MountingTask management responses SAS FeaturesInterface Requirements Task management functionsCommands supported by Cheetah 15K.7 SAS family drives Scsi Commands SupportedCommands supported by Cheetah 15K.7 SAS family drives Commands supported by Cheetah 15K.7 SAS family drives Inquiry data Mode Sense dataCheetah 15K.7 inquiry data Cheetah 15K.7 SAS Product MANUAL, REV. F 11.3.2.1 600GBmodel Mode Sense data 11.3.2.2 450GB model Mode Sense data 11.3.2.3 300GB model Mode Sense data SAS physical interface Miscellaneous Operating Features and ConditionsSupported Feature or condition Miscellaneous featuresDatum B This Area Pin descriptions Physical characteristicsConnector requirements Electrical descriptionReady LED Out PowerSignal Characteristics SAS transmitters and receiversAdditional Information Differential signalsSAS-2 Specification Compliance BPSIndex Page SAS See also cooling Americas Seagate Technology LLC

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