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Reliability specifications

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5.0 Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints. Seek error rate: Read Error Rates1 Recovered Data Unrecovered Data Miscorrected Data Interface error rate: Mean Time Between Failures (MTBF) Annualized Failure Rate (AFR): Preventive maintenance: Less than 10 errors in 108 seeks Less than 10 sectors in 1012 bits transferred (OEM default settings) Less than 1 sector in 1016 bits transferred Less than 1 sector in 1021 bits transferred Less than 1 error in 1012 bits transferred with minimum receive eye. Less than 1 error in 1014 bits transferred with typical receive eye. See Section 9.6.4, "FC Differential input." on page 66 2,000,000 hours 0.44% None required 1. Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated. 5.1 Error rates The error rates stated in this manual assume the following: • The drive is operated in accordance with this manual using DC power as defined in Section 6.3 • Errors caused by host system failures are excluded from error rate computations. • Assume random data. • Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry time. 5.1.1 Recoverable Errors Recovereable errors are those detected and corrected by the drive, and do not require user intervention. Recoverable Data errors will use Error Correction when needed. Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read, and using write bits transferred for recoverable errors occurring during a write. 5.1.2 Unrecoverable Errors Unrecoverable Data Errors (Sense Key = 03h) are specified at less than 1 sector in error per 1016 bits transferred. Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block. Savvio 10K.4 FC Product Manual, Rev. A 13

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

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Savvio 10K.4 FC Product Manual, Rev. A

5.0

Reliability specifications

The following reliability specifications assume correct host and drive operational interface, including all inter-

face timings, power supply voltages, environmental requirements and drive mounting constraints.

5.1

Error rates

The error rates stated in this manual assume the following:

•

The drive is operated in accordance with this manual using DC power as defined in Section 6.3

•

Errors caused by host system failures are excluded from error rate computations.

•

Assume random data.

•

Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write

retries and full retry time.

5.1.1

Recoverable Errors

Recovereable errors are those detected and corrected by the drive, and do not require user intervention.

Recoverable Data errors will use Error Correction when needed.

Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a

read, and using write bits transferred for recoverable errors occurring during a write.

5.1.2

Unrecoverable Errors

Unrecoverable Data Errors (Sense Key = 03h) are specified at less than 1 sector in error per 10

bits trans-

ferred. Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block.

Seek error rate:

Less than 10 errors in 10

seeks

Read Error Rates

Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.

Recovered Data

Less than 10 sectors in 10

bits transferred (OEM default settings)

Unrecovered Data

Less than 1 sector in 10

bits transferred

Miscorrected Data

Less than 1 sector in 10

bits transferred

Interface error rate:

Less than 1 error in 10

bits transferred with minimum receive eye.

Less than 1 error in 10

bits transferred with typical receive eye.

See Section 9.6.4, "FC Differential input." on page 66

Mean Time Between Failures (MTBF)

2,000,000 hours

Annualized Failure Rate (AFR):

0.44%

Preventive maintenance:

None required