Performance characteristics, Seek performance | Seagate ST3600002FC

4.0Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Cheetah NS 10K.2 FC drives.

4.1Internal drive characteristics

	ST3600002FC	ST3450802FC	ST3300602FC
Drive capacity*	600	450	300	Gbytes (formatted, rounded off value)
Read/write data heads	8	6	4
Tracks per inch	165,000	165,000	165,000	TPI
Peak bits per inch	1,347	1,347	1,347	kBPI
Areal density	225	225	225	Gbits/inch2
Internal data rate	1.01 to 1.84	1.01 to 1.84	1.01 to 1.84	Gbits/sec (variable with zone)
disk rotation speed	10k	10k	10k	rpm
Avg rotational latency	2.98	2.98	2.98	msec

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

4.2Seek performance

See Section 9.5, "FC-AL physical interface" on page 64 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details.

4.2.1Access time

Not including controller overhead1,2(msec)

		Read	Write
Average	Typical	3.8	4.4
Single track	Typical	0.22	0.22
Full stroke	Typical	8.1	8.7

1.Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

2.Access to data = access time + latency time.

Cheetah NS 10K.2 FC Product Manual, Rev. B

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Seagate ST3600002FC manual Performance characteristics, Internal drive characteristics, Seek performance, Access time

Contents

ST3600002FC ST3450802FC ST3300602FC Cheetah NS 10K.2 FCPage Contents Installation Seagate Technology support services Cheetah NS 10K.2 FC Product Manual, Rev. B Scope Cheetah NS 10K.2 FC Product Manual, Rev. B Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibility Compliance Ncits TR-19 Reference documents Cheetah NS 10K.2 FC Product Manual, Rev. B General description Media description Standard features Formatted capacities PerformanceReliability Programmable drive capacity Factory-installed optionsUser-installed accessories Internal drive characteristics Performance characteristicsAccess time Seek performance General performance characteristics Format command execution time minutesStart/stop time ST3600002FC ST3450802FC ST3300602FC 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 4 S.M.A.R.T A.R.T. delay timesControlling S.M.A.R.T Performance impact Determining rate Reporting controlPredictive failures Thermal monitor Temperature Log Page 0Dh State of the drive prior to testingDrive Self Test DST DST failure definition Short and extended tests Invoking DSTShort test Function Code 001b Extended test Function Code 010b Abort Product warranty Cheetah NS 10K.2 FC Product Manual, Rev. B AC power requirements Physical/electrical specificationsDC power requirements DC power requirements for ST3600002FC model Gbit Amps DC power requirements for ST3450802FC model Gbit Amps DC power requirements for ST3300602FC model Gbit Amps General DC power requirement notes Current profiles Power sequencingConducted noise immunity Cheetah NS 10K.2 FC Product Manual, Rev. B Cheetah NS 10K.2 FC Product Manual, Rev. B ST3600002FC Power dissipation ST3450802FC ST3300602FC Relative humidity Temperature a. OperatingEnvironmental limits Shock Effective altitude sea level a. OperatingShock and vibration Recommended mounting Package size Packaged/product weight Drop height Vibration a. Operating-normal Air cleanlinessAcoustics Corrosive environment China Restriction of Hazardous Substances RoHS Directive Mounting configuration dimensions Mechanical specifications Cheetah NS 10K.2 FC Product Manual, Rev. B Drive error recovery procedures Defect and error managementDrive internal defects/errors 77.81 Media Pre-Scan FC-AL system errorsBackground Media Scan Idle Read After Write Deferred Auto-Reallocation Drive ID/option selection InstallationDrive orientation Cooling Air flow Drive mounting Grounding Cheetah NS 10K.2 FC Product Manual, Rev. B Fibre Channel link service frames FC-AL featuresLink services supported Type of frame Interface requirements FC Scsi FCP response codes Function name Response code Fibre Channel task management functionsFibre Channel task management responses NPort login Plogi payload Bytes Fibre Channel port login Fibre Channel Process Login Fibre Channel port login acceptNPort Login Accept ACC payload Bytes Process Login Plri payload Fibre Channel fabric login Fibre Channel Process Login AcceptProcess Login Accept ACC payload Bytes Fabric Login Flogi payload Bytes Fabric Login Accept ACC payload Bytes Fibre Channel fabric accept login Fibre Channel Arbitrated Loop options Dual port supportFC-AL options supported Option Supported Supported commands Command code Command name Scsi commands supported Verify error recovery page 07h Cheetah NS 10K.2 FC Product Manual, Rev. B Temperature page 0Dh Cheetah NS 10K.2 FC inquiry data Bytes Data hex Mode Sense dataInquiry data Page Mode Data Header Mode Pages 00 00 05 12 8B 00 50 Supported Feature or condition Miscellaneous operating features and conditions Physical description Physical characteristicsFC-AL physical interface Pin descriptions Connector requirementsElectrical description FC-AL transmitters and receivers FC-SCA pin descriptions Pin Signal name Signal type Fault LED Out Power Motor start controls Enable port bypass signalsActive LED Out 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESI Alpa SEL ID Device control codes Signal characteristicsTTL input characteristics FC Differential input LED driver signalsFC Differential output Receive eye diagram Eye diagram data values Link rate GHz Cheetah NS 10K.2 FC Product Manual, Rev. B Technical Support Seagate Technology support servicesPresales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index FCP Flogi Plogi Page See also cooling Page Seagate Technology LLC