Standard features, Media description | Seagate ST3600002SS instruction

4.1Standard features

Cheetah NS SAS drives have the following standard features:

•Perpendicular recording technology

•1.5 / 3 / 6 Gb Serial Attached SCSI (SAS) interface

•Integrated dual port SAS controller

•Support for SAS expanders and fanout adapters

•Downloadable firmware using the SAS interface

•128 - deep task set (queue)

•Supports up to 32 initiators

•Jumperless configuration.

•User-selectable logical block size (512, 520, 524, or 528 bytes per logical block)

•Programmable logical block reallocation scheme

•Flawed logical block reallocation at format time

•Programmable auto write and read reallocation

•Reallocation of defects on command (Post Format)

•ECC maximum burst correction length of 400 bits

•No preventive maintenance or adjustments required

•Dedicated head landing zone

•Embedded servo design

•Automatic shipping lock

•Self diagnostics performed when power is applied to the drive

•Zone bit recording (ZBR)

•Vertical, horizontal, or top down mounting

•Dynamic spindle brake

•16 MB data buffer (see Section 5.5).

•Drive Self Test (DST)

•Background Media Scan (BGMS)

•Power Save

4.2Media description

The media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.

4.3Performance

•Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance.

•600 MB/sec maximum instantaneous data transfers.

•10K RPM spindle. Average latency = 2.98 ms

•Command queuing of up to 128 commands

•Background processing of queue

•Supports start and stop commands (spindle stops spinning)

•Adaptive seek velocity; improved seek performance

4.4Reliability

•Annualized Failure Rate (AFR) of 0.55%

•Mean Time Between Failures (MTBF) of 1,600,000 hours

•Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)

•5-year warranty

Cheetah NS 10K.2 SAS Product Manual, Rev. F

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Seagate ST3600002SS, ST3450802SS manual Standard features, Media description, Performance, Reliability

Contents

ST3600002SS ST3450802SS Cheetah NS 10K.2 SASPage Contents Interface requirements Defect and error managementInstallation Seagate Online Support and Services Seagate Technology support services Scope Electromagnetic susceptibility Standards, compliance and reference documentsStandards Electromagnetic compatibility Compliance Reference documents General description Reliability Standard featuresMedia description Performance Programmable drive capacity Factory-installed optionsFormatted capacities Seek performance Performance characteristicsInternal drive characteristics Access time Start/stop time Format command execution time minutesGeneral performance characteristics Caching write data Prefetch/multi-segmented cache controlCache operation Prefetch operation Unrecoverable Errors Reliability specificationsError rates Recoverable Errors Hot plugging the drive Reliability and serviceInterface errors Preventive maintenance Reporting control 4 S.M.A.R.TControlling S.M.A.R.T Performance impact Drive Self Test DST Temperature Log Page 0Dh Parameter Code DescriptionPredictive failures Thermal monitor Implementation DST failure definition Extended test Function Code 010b Product warrantyShort test Function Code 001b Shipping ST3600002SS DC power requirements Physical/electrical specificationsAC power requirements DC power requirements General DC power requirement notes ST3450802SS DC power requirements Current profiles Power sequencingConducted noise immunity Typical ST3600002SS drive +5V and +12V current profiles ST3450802SS Power dissipationST3600002SS Environmental limits Temperature a. Operating Shock Relative humidityEffective altitude sea level a. Operating Shock and vibration Recommended mounting Corrosive environment Air cleanlinessVibration a. Operating-normal Acoustics China Restriction of Hazardous Substances RoHS Directive Physical dimensions Mechanical specifications Drive error recovery procedures Defect and error managementDrive internal defects/errors 77.81 Deferred Auto-Reallocation SAS system errorsBackground Media Scan Media Pre-Scan Idle Read After Write Drive orientation Installation Air flow Cooling Grounding Drive mounting Interface requirements SAS features Dual port support Commands supported by Cheetah NS 10K.2 SAS family drives Scsi commands supported Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives 10.3.2Mode Sense data Inquiry dataPage Mode Pages 10.3.2.1 ST3600002SS Mode Sense data 10.3.2.2 ST3450802SS Mode Sense data Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interface Datum B Connector requirements Physical characteristics SAS pin descriptions Electrical descriptionPin descriptions Ready LED Out Signal characteristicsPower SAS transmitters and receivers 10.5.2.1 Eye masks 10.5.2.1.1 Eye masks overview LED drive signalDifferential signals General interface characteristics Receive eye mask 2OP 0, 5 xadditional sinusoidal jitter X 1OP Transmitter signal characteristics Maximum allowable jitter Receiver signal characteristics Impedance requirements Sheet 1 Compliant jitter test pattern Cjtpat Electrical TxRx connections Impedance requirements Sheet 2 = -5, 437dB Shows the zero-length test load Additional information SAS-2 Specification complianceReceiver characteristics Cheetah NS 10K.2 SAS Product Manual, Rev. F Index Page SAS See also cooling Page Americas Seagate Technology LLC