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Seagate ST9900805SS Savvio 10K.4 FC Product Manual - Page 15

Performance characteristics - hard disk

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4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Savvio 10K.4 FC drives. 4.1 Internal drive characteristics Drive capacity* Read/write data heads Tracks per inch Peak bits per inch Areal density Internal data rate disk rotation speed Avg rotational latency ST9600204FC 600 6 240,000 1,430 343 1.62 10K 3.0 ST9450404FC 450 GBs (formatted, rounded off value) 6 180,000 TPI 1,430 kBPI 257.4 Gb/in2 1.62 Gb/s (variable with zone) 10K rpm 3.0 ms *One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 4.2 Seek performance See Section 9.5, "FC-AL physical interface" on page 58 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details. 4.2.1 Access time Not including controller overhead1,2(ms) Average Single track Full stroke Average Single track Full stroke 600GB Typical 450GB Typical Read 3.80 0.30 3.88 4.00 0.32 4.10 Write 4.40 0.55 4.56 4.65 0.58 4.61 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. Savvio 10K.4 FC Product Manual, Rev. A 9

Section	Page
1.0 Scope	7
2.0 Standards, compliance and reference documents	8
2.1 Standards	8
2.1.1 Electromagnetic compatibility	8
2.1.1.1 Electromagnetic susceptibility	8
2.1.2 Electromagnetic compliance	9
2.2 European Union Restriction of Hazardous Substances (RoHS)	9
2.3 Reference documents	10
3.0 General description	11
3.1 Standard features	12
3.2 Media description	12
3.3 Performance	13
3.4 Reliability	13
3.5 Formatted capacities	13
3.6 Programmable drive capacity	14
3.7 Factory-installed options	14
3.8 User-installed accessories	14
4.0 Performance characteristics	15
4.1 Internal drive characteristics	15
4.2 Seek performance	15
4.2.1 Access time	15
4.2.2 Format command execution time (minutes)	16
4.2.3 General performance characteristics	16
4.3 Start/stop time	16
4.4 Prefetch/multi-segmented cache control	16
4.5 Cache operation	17
4.5.1 Caching write data	18
4.5.2 Prefetch operation	18
5.0 Reliability specifications	19
5.1 Error rates	19
5.1.1 Recoverable Errors	19
5.1.2 Unrecoverable Errors	19
5.1.3 Seek errors	20
5.1.4 Interface errors	20
5.2 Reliability and service	20
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)	20
5.2.2 Preventive maintenance	20
5.2.3 Hot plugging the drive	20
5.2.4 S.M.A.R.T.	21
5.2.5 Thermal monitor	22
5.2.6 Drive Self Test (DST)	23
5.2.6.1 DST failure definition	23
5.2.6.2 Implementation	23
5.2.7 Product warranty	25
6.0 Physical/electrical specifications	26
6.1 PowerChoiceTM power management	26
6.1.1 PowerChoice reporting methods	27
6.2 AC power requirements	27
6.3 DC power requirements	28
6.3.1 Conducted noise immunity	30
6.3.2 Power sequencing	30
6.3.3 Current profiles	31
6.4 Power dissipation	33
6.5 Environmental limits	35
6.5.1 Temperature	35
6.5.2 Relative humidity	35
6.5.3 Effective altitude (sea level)	36
6.5.4 Shock and vibration	36
6.5.4.1 Shock	36
6.5.4.2 Vibration	38
6.5.5 Acoustics	38
6.5.6 Air cleanliness	38
6.5.7 Corrosive environment	38
6.5.8 European Union Restriction of Hazardous Substances (RoHS) Directive	39
6.5.9 China Restriction of Hazardous Substances (RoHS) Directive	39
6.5.10 Electromagnetic susceptibility	39
6.6 Mechanical specifications	40
7.0 Defect and error management	41
7.1 Drive internal defects/errors	41
7.2 Drive error recovery procedures	41
7.3 FC-AL system errors	43
7.4 Background Media Scan	43
7.5 Media Pre-Scan	43
7.6 Deferred Auto-Reallocation	44
7.7 Idle Read After Write	44
8.0 Installation	45
8.1 Drive ID/option selection	45
8.2 Drive orientation	45
8.3 Cooling	45
8.4 Drive mounting	46
8.5 Grounding	47
9.0 Interface requirements	48
9.1 FC-AL features	48
9.1.1 Fibre Channel link service frames	48
9.1.2 Fibre Channel task management functions	49
9.1.3 Fibre Channel task management responses	49
9.1.4 Fibre Channel port login	50
9.1.5 Fibre Channel port login accept	51
9.1.6 Fibre Channel Process Login	51
9.1.7 Fibre Channel Process Login Accept	52
9.1.8 Fibre Channel fabric login	52
9.1.9 Fibre Channel fabric accept login	53
9.1.10 Fibre Channel Arbitrated Loop options	54
9.2 Dual port support	54
9.3 SCSI commands supported	55
9.3.1 Inquiry data	59
9.3.2 Mode Sense data	59
9.4 Miscellaneous operating features and conditions	63
9.5 FC-AL physical interface	64
9.5.1 Physical characteristics	64
9.5.1.1 Physical description	64
9.5.2 Connector requirements	65
9.5.3 Electrical description	65
9.5.4 Pin descriptions	65
9.5.5 FC-AL transmitters and receivers	66
9.5.6 Power	67
9.5.7 Fault LED Out	67
9.5.8 Active LED Out	68
9.5.9 Enable port bypass signals	68
9.5.10 Motor start controls	68
9.5.11 SEL_6 through SEL_0 ID lines	69
9.5.11.1 Parallel Enclosure Services Interface (ESI)	69
9.5.12 Device control codes	71
9.6 Signal characteristics	71
9.6.1 TTL input characteristics	71
9.6.2 LED driver signals	72
9.6.3 FC Differential output	72
9.6.4 FC Differential input	72