Standard features, Media description | Seagate ST3450657SS specs

4.1Standard features

Cheetah 15K.7 drives have the following standard features:

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

•Integrated dual port SAS controller supporting the SCSI protocol

•Support for SAS expanders and fanout adapters

•Firmware downloadable using the SAS interface

•128 - deep task set (queue)

•Supports up to 32 initiators

•Jumperless configuration.

•User-selectable logical block size (512, 520, 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 320 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

•Vertical, horizontal, or top down mounting

•Dynamic spindle brake

•16 Mbyte data buffer

•Drive Self Test

•Background Media Scan

•Power Save

Cheetah 15K.7 SAS SED models have the following additional features:

•Automatic data encryption/decryption on all writes and reads to and from the media

•Controlled access

•Random number generator

•Drive locking

•Two independent data bands which each have it’s own ownership credential and encryption key

•Cryptographic erase of user data for a drive that will be repurposed or scrapped

•Authenticated firmware download

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

•Programable multi-segmented cache buffer

•600 Mbytes/sec maximum instantaneous data transfers

•15k RPM spindle. Average latency = 2.0 msec

•Background processing of queue

•Supports start and stop commands (spindle stops spinning)

•Adaptive seek velocity; improved seek performance

Cheetah 15K.7 SAS Product Manual, Rev. D

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Seagate ST3450657SS, ST3300457SS, ST3600857SS manual Standard features, Media description, Performance

Contents

ST3450657SS ST3600857SSST3300457SS Standard models Self-Encrypting Drive modelsPage Contents Installation Defect and error managementAbout Fips About self-encrypting drives Interface requirements Power Cheetah 15K.7 SAS Product Manual, Rev. D Seagate Online Support and Services Seagate Technology support services Scope Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibility European Union Restriction of Hazardous Substances RoHS Compliance Reference documents General description Media description Standard featuresPerformance Reliability Factory-installed optionsFormatted capacities Programmable drive capacity Internal drive characteristics Performance characteristicsAccess time Seek time General performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache control Prefetch operation Caching write data Error rates Reliability specificationsRecoverable Errors Unrecoverable Errors Seek errors Reliability and serviceInterface errors Preventive maintenance Controlling S.M.A.R.T 4 S.M.A.R.TPerformance impact Milliseconds Determining rate Reporting controlPredictive failures Thermal monitor State of the drive prior to testing Temperature Log Page 0Dh Parameter Code DescriptionDrive Self Test DST DST failure definition Short and extended tests Invoking DSTShort test Function Code 001b Extended test Function Code 010b Abort Product warrantyShipping Product repair and return information AC power requirements Physical/electrical specificationsDC power requirements Gbit mode Amps 600 GB DC power requirements 450 GB DC power requirements 300 GB DC power requirements Conducted noise immunity Power sequencingCurrent profiles Typical 600GB current profiles Typical 300GB current profiles Power dissipation 450GB model Environmental limits Temperature a. Operating Effective altitude sea level a. Operating Relative humidityShock and vibration Shock Package size Packaged/product weight Drop height Recommended mounting Vibration a. Operating-normal Acoustics Air cleanlinessCorrosive environment RoHS compliance statement Units of Measure mm inches Mechanical specifications Purpose About FipsLevel 2 security Admin SP Controlled accessAbout self-encrypting drives Data encryption Random number generator RNG Authenticated firmware downloadDrive locking Data bands Supported commands Power requirements Drive internal defects/errors Defect and error managementDrive error recovery procedures Page Background Media Scan SAS system errors Deferred Auto-Reallocation Media Pre-ScanIdle Read After Write Drive orientation InstallationCooling Grounding Drive mounting Interface requirements SAS features Commands supported by Cheetah 15K.6 SAS family drives Scsi commands supportedDual port support Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Cheetah 15K.7 inquiry data Bytes Data hex Inquiry data Mode Sense data Mode Pages 12.3.2.1 600GBmodel Mode Sense data DEF CHG Mode Data Header Block Descriptor Mode Pages 12.3.2.2 450GB model Mode Sense data DEF CHG Read Capacity Data Buffer C D E F Mode Pages 12.3.2.3 300GB model Mode Sense data Miscellaneous features Miscellaneous operating features and conditions SAS physical interface Miscellaneous status Datum B Connector requirements Physical characteristics Pin descriptions Electrical descriptionSAS pin descriptions Power Signal characteristicsSAS transmitters and receivers Ready LED Out LED drive signal SAS-2 Specification complianceDifferential signals General interface characteristics Cheetah 15K.7 SAS Product Manual, Rev. D Numerics IndexPage SAS Smart