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Seagate ST3300457FC Cheetah 15K.5 FC Product Manual - Page 19

Performance characteristics

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4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.5 FC drives. 4.1 Internal drive characteristics Drive capacity* Read/write data heads Bytes per track Tracks per inch Peak bits per inch Areal density Internal data rate Disc rotation speed Avg rotational latency ST3300655FC 300.0 8 74,340 125,000 890k 110 960 to 1607 15k 2.0 ST3146855FC ST373455FC 146.8 73.4 4 2 74,340 74,340 125,000 125,000 890k 890k 110 110 960 to 1607 960 to 1607 15k 15k 2.0 2.0 Gbytes (formatted, rounded off value) Bytes (average, rounded off values) TPI BPI Gbits/inch2 Mbits/sec (variable with zone) rpm msec *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 4.2 Seek performance characteristics See Section 9.5, "FC-AL physical interface" on page 64 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details. 4.2.1 Access time Average Single track Full stroke Typical Typical Typical Not including controller overhead1,2(msec) Read Write 3.5 4.0 0.2 0.4 6.8 7.5 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 15K.5 FC Product Manual, Rev. F 11

Section	Page
1.0 Scope	9
2.0 Applicable standards and reference documentation	11
2.1 Standards	11
2.1.1 Electromagnetic compatibility	11
2.1.1.1 Electromagnetic susceptibility	11
2.1.2 Electromagnetic compliance	12
2.2 European Union Restriction of Hazardous Substances (RoHS)	12
2.3 Reference documents	13
3.0 General description	15
3.1 Standard features	16
3.2 Media description	16
3.3 Performance	17
3.4 Reliability	17
3.5 Formatted capacities	17
3.5.1 Programmable drive capacity	17
3.6 Factory-installed accessories	18
3.7 Factory-installed options	18
3.8 User-installed accessories	18
4.0 Performance characteristics	19
4.1 Internal drive characteristics	19
4.2 Seek performance characteristics	19
4.2.1 Access time	19
4.2.2 Format command execution time (minutes)	20
4.2.3 General performance characteristics	20
4.3 Start/stop time	20
4.4 Prefetch/multi-segmented cache control	20
4.5 Cache operation	21
4.5.1 Caching write data	21
4.5.2 Prefetch operation	22
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Recoverable Errors	23
5.1.2 Unrecoverable Errors	23
5.1.3 Seek errors	24
5.1.4 Interface errors	24
5.2 Reliability and service	24
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)	24
5.2.2 Preventive maintenance	24
5.2.3 Hot plugging the drive	24
5.2.4 S.M.A.R.T.	25
5.2.5 Thermal monitor	26
5.2.6 Drive Self Test (DST)	27
5.2.6.1 DST failure definition	27
5.2.6.2 Implementation	27
5.2.6.2.1 State of the drive prior to testing	27
5.2.6.2.2 Invoking DST	28
5.2.6.2.3 Short and extended tests	28
5.2.6.2.4 Log page entries	28
5.2.6.2.5 Abort	29
5.2.7 Product warranty	29
6.0 Physical/electrical specifications	31
6.1 AC power requirements	31
6.2 DC power requirements	31
6.2.1 Conducted noise immunity	33
6.2.2 Power sequencing	33
6.2.3 Current profiles	33
6.3 Power dissipation	37
6.4 Environmental limits	39
6.4.1 Temperature	39
6.4.2 Relative humidity	40
6.4.3 Effective altitude (sea level)	40
6.4.4 Shock and vibration	40
6.4.4.1 Shock	40
6.4.4.2 Vibration	43
6.4.5 Acoustics	43
6.4.6 Air cleanliness	43
6.4.7 Corrosive environment	43
6.4.8 RoHS compliance statement	44
6.4.9 Electromagnetic susceptibility	44
6.5 Mechanical specifications	45
7.0 Defect and error management	47
7.1 Drive internal defects/errors	47
7.2 Drive error recovery procedures	47
7.3 FC-AL system errors	49
7.4 Background Media Scan	49
7.5 Media Pre-Scan	50
7.6 Deferred Auto-Reallocation	50
7.7 Idle Read After Write	50
8.0 Installation	51
8.1 Drive ID/option selection	51
8.2 Drive orientation	51
8.3 Cooling	51
8.4 Drive mounting	52
8.5 Grounding	53
9.0 Interface requirements	55
9.1 FC-AL features	55
9.1.1 Fibre Channel link service frames	55
9.1.2 Fibre Channel task management functions	56
9.1.3 Fibre Channel task management responses	56
9.1.4 Fibre Channel port login	57
9.1.5 Fibre Channel port login accept	58
9.1.6 Fibre Channel Process Login	58
9.1.7 Fibre Channel Process Login Accept	59
9.1.8 Fibre Channel fabric login	59
9.1.9 Fibre Channel fabric accept login	60
9.1.10 Fibre Channel Arbitrated Loop options	61
9.2 Dual port support	61
9.3 SCSI commands supported	62
9.3.1 Inquiry data	66
9.3.2 Mode Sense data	66
9.4 Miscellaneous operating features and conditions	71
9.5 FC-AL physical interface	72
9.5.1 Physical characteristics	72
9.5.1.1 Physical description	72
9.5.2 Connector requirements	73
9.5.3 Electrical description	73
9.5.4 Pin descriptions	73
9.5.5 FC-AL transmitters and receivers	74
9.5.6 Power	75
9.5.7 Fault LED Out	75
9.5.8 Active LED Out	76
9.5.9 Enable port bypass signals	76
9.5.10 Motor start controls	76
9.5.11 SEL_6 through SEL_0 ID lines	77
9.5.11.1 Parallel Enclosure Services Interface (ESI)	77
9.5.12 Device control codes	79
9.6 Signal characteristics	79
9.6.1 TTL input characteristics	79
9.6.2 LED driver signals	80
9.6.3 FC Differential output	80
9.6.4 FC Differential input	80