Dual port support | Seagate ST35000414SS, ST35000415SS manual

10.2Dual port support

Constellation ES SAS drives have two independent ports. These ports may be connected in the same or differ- ent 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 6Gb/s or the first port can run at 6Gb/s while the second port runs at 3Gb/s. The supported link rates are 1.5, 3.0, or 6.0 Gb/s.

Subject to buffer availability, the Constellation ES 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.

52	ConstellationES Series SAS Product Manual, Rev. D

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Seagate ST35000414SS, ST35000415SS manual Dual port support

Contents

ST32000444SS ST31000424SS ST3500414SS ST32000445SS ST31000425SS ST3500415SSStandard Models Self-Encrypting Drive Models Revision history Contents Defect and error management InstallationAbout self-encrypting drives Interface requirements Seagate Technology support services ConstellationES Series SAS Product Manual, Rev. D List of Figures ST32000444SS & ST32000445SS model current profiles ConstellationES Series SAS Product Manual, Rev. D Scope Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibility Electromagnetic compliance Electromagnetic compliance for the European UnionAustralian C-Tick Korean KCC Reference documents European Union Restriction of Hazardous Substances RoHS General description Standard features Media description Performance ReliabilityFormatted capacities Programmable drive capacity Factory-installed options Performance characteristics Internal drive characteristicsSeek performance characteristics Access time General performance characteristics Start/stop time Prefetch/multi-segmented cache control Cache operation Caching write data Prefetch operation Reliability specifications Error ratesRecoverable Errors Unrecoverable Errors Reliability and service Seek errorsInterface errors Preventive maintenance 4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Reporting control Temperature Log Page 0Dh Parameter Code Description Predictive failuresThermal monitor State of the drive prior to testing Drive Self Test DSTDST failure definition Implementation Short and extended tests Short test Function Code 001bExtended test Function Code 010b Log page entries Product warranty ShippingProduct repair and return information Physical/electrical specifications PowerChoiceTM power managementPowerChoice modes AC power requirements DC power requirements ConstellationES Series SAS Product Manual, Rev. D ConstellationES Series SAS Product Manual, Rev. D Page General DC power requirement notes Power sequencingConducted noise immunity Current profiles ST32000444SS & ST32000445SS model current profiles ST31000424SS & ST31000425SS model current profiles ST3500414SS & ST3500415SS model current profiles Power dissipation ST32000444SS and ST32000445SS in 3Gb operation ST32000444SS and ST32000445SS in 6Gb operation ST31000424SS and ST31000425SS in 3Gb operation ST31000424SS and ST31000425SS in 6Gb operation ST3500414SS CURRENT/POWER vs Throughput SAS 3.0GB ST3500414SS and ST3500415SS in 3Gb operationOs per Second ST3500414SS and ST3500415SS in 6Gb operation Temperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. Operating Shock and vibrationShock Recommended mounting Air cleanliness Vibration a. Operating-normalAcoustics Corrosive environment Electromagnetic susceptibility Mechanical specifications Mounting configuration dimensions Controlled access Admin SPAbout self-encrypting drives Data encryption Default password Random number generator RNGDrive locking Data bands Authenticated firmware download Power requirementsSupported commands Cryptographic erase Defect and error management Drive internal defects/errorsDrive error recovery procedures SAS system errors Background Media Scan Media Pre-ScanDeferred Auto-Reallocation Idle Read After Write Installation Drive orientation Cooling Air flow Drive mounting Grounding SAS features Interface requirements Dual port support Scsi commands supported Supported commands Supported commands Supported commands Supported commands Mode Sense data Inquiry dataConstellation ES inquiry data Page Mode Data Header 74 70 6d b0 00 00 02 3a 38 60 30 00 00 02 Miscellaneous operating features and conditions Miscellaneous featuresMiscellaneous status SAS physical interface Datum B Section C C Section a a Physical characteristics Connector requirementsElectrical description Pin descriptions Signal characteristics PowerSAS transmitters and receivers Ready LED Out SAS-2 Specification Compliance LED drive signalDifferential signals General interface characteristics Seagate Technology support services Warranty Support Direct.seagate.com Spp.seagate.comWeb Presales Support Technical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Presales Support Index Numerics KCC Msid Mtbf See also cooling Page ConstellationES Series SAS Product Manual, Rev. D Page Seagate Technology LLC