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Seagate 15K.3 ST373453FC Model Product Manual PDF - Page 23

Reliability specifications

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Cheetah 15K.3 FC Product Manual, Rev. D 13 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: MTBF: Preventive maintenance: Less than 10 errors in 108 seeks Less than 10 errors in 1013 bits transferred (OEM default settings) Less than 1 sector in 1015 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, "Differential PECL input." on page 63 1,200,000 hours 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 paragraph 6.2, "DC power requirements." • The drive has been formatted with the FC-AL Format command. • Errors caused by media defects or host system failures are excluded from error rate computations. • Assume random data. 5.1.1 Interface errors An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC error. The total error rate for a loop of devices is the sum of the individual device error rates. 5.1.2 Environmental interference When evaluating systems operation under conditions of electromagnetic interference (EMI), the performance of the drive within the system is considered acceptable if the drive does not generate an unrecoverable condition. An unrecoverable error, or condition, is defined as one that: • is not detected and corrected by the drive itself • is not detected from the error or fault status provided through the drive or FC-AL interface • is not recovered by normal drive or system recovery procedures without operator intervention 5.1.3 Write errors Write errors can occur as a result of media defects, environmental interference, or equipment malfunction. Therefore, write errors are not predictable as a function of the number of bits passed. If an unrecoverable write error occurs because of an equipment malfunction in the drive, the error is classified as a failure affecting MTBF. Unrecoverable write errors are those that cannot be corrected within two attempts at writing the record with a read verify after each attempt (excluding media defects). 5.1.4 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (15h) is reported with a Hardware error (4h) reported in the Sense Key. This is an unre-

Section	Page
1.0 Scope 1	7
2.0 Applicable standards and reference documentation 3	7
2.1 Standards 3	7
2.1.1 Electromagnetic compatibility 3	7
2.1.2 Electromagnetic compliance 3	7
2.2 Reference documents 4	7
3.0 General description 5	7
3.1 Standard features 6	7
3.2 Media description 6	7
3.3 Performance 6	7
3.4 Reliability 7	7
3.5 Unformatted and formatted capacities 7	7
3.6 Programmable drive capacity 7	7
3.7 Factory-installed accessories 7	7
3.8 Factory-installed options 7	7
3.9 User-installed accessories 7	7
4.0 Performance characteristics 9	7
4.1 Internal drive characteristics 9	7
4.2 Seek performance characteristics 9	7
4.2.1 Access time 9	7
4.2.2 Format command execution time for ³ 512-byte sectors (minutes) 9	7
4.2.3 General performance characteristics 10	7
4.3 Start/stop time 10	7
4.4 Prefetch/multi-segmented cache control 10	7
4.5 Cache operation 10	7
4.5.1 Caching write data 11	7
4.5.2 Prefetch operation 12	7
4.5.3 Optimizing cache performance for desktop and server applications 12	7
5.0 Reliability specifications 13	7
5.1 Error rates 13	7
5.1.1 Interface errors 13	7
5.1.2 Environmental interference 13	7
5.1.3 Write errors 13	7
5.1.4 Seek errors 13	7
5.2 Reliability and service 14	7
5.2.1 Mean time between failure (MTBF) 14	7
5.2.2 Preventive maintenance 14	7
5.2.3 Service life 14	7
5.2.4 Service philosophy 14	7
5.2.5 Service tools 14	7
5.2.6 Hot plugging the drive 14	7
5.2.7 S.M.A.R.T. 15	7
5.2.8 Thermal monitor 16	7
5.2.9 Drive Self Test (DST) 17	7
5.2.10 Product warranty 19	7
6.0 Physical/electrical specifications 21	7
6.1 AC power requirements 21	7
6.2 DC power requirements 21	7
6.2.1 Conducted noise immunity 22	7
6.2.2 Power sequencing 22	7
6.2.3 Current profiles 22	7
6.3 Power dissipation 26	7
6.4 Environmental limits 27	7
6.4.1 Temperature 27	8
6.4.2 Relative humidity 28	8
6.4.3 Effective altitude (sea level) 28	8
6.4.4 Shock and vibration 28	8
6.4.5 Air cleanliness 31	8
6.4.6 Acoustics 31	8
6.4.7 Electromagnetic susceptibility 31	8
6.5 Mechanical specifications 32	8
7.0 Defect and error management 33	8
7.1 Drive internal defects/errors 33	8
7.2 Drive error recovery procedures 33	8
7.3 FC-AL system errors 34	8
8.0 Installation 35	8
8.1 Drive ID/option selection 35	8
8.2 LED connections 35	8
8.2.1 J6 connector requirements 36	8
8.3 Drive orientation 36	8
8.4 Cooling 36	8
8.5 Drive mounting 37	8
8.6 Grounding 37	8
9.0 Interface requirements 39	8
9.1 FC-AL features 39	8
9.1.1 Fibre Channel link service frames 39	8
9.1.2 Fibre Channel task management functions 39	8
9.1.3 Fibre Channel task management responses 39	8
9.1.4 Fibre Channel port login 40	8
9.1.5 Fibre Channel port login accept 41	8
9.1.6 Fibre Channel Process Login 41	8
9.1.7 Fibre Channel Process Login Accept 41	8
9.1.8 Fibre Channel fabric login 42	8
9.1.9 Fibre Channel fabric accept login 43	8
9.1.10 Fibre Channel Arbitrated Loop options 44	8
9.2 Dual port support 44	8
9.3 SCSI commands supported 45	8
9.3.1 Inquiry data 49	8
9.3.2 Mode Sense data 49	8
9.4 Miscellaneous operating features and conditions 54	8
9.5 FC-AL physical interface 55	8
9.5.1 Physical characteristics 55	8
9.5.2 Connector requirements 56	8
9.5.3 Electrical description 57	8
9.5.4 Pin descriptions 57	8
9.5.5 FC-AL transmitters and receivers 58	8
9.5.6 Power 58	8
9.5.7 Fault LED Out 58	8
9.5.8 Active LED Out 58	8
9.5.9 Enable port bypass signals 59	8
9.5.10 Motor start controls 59	8
9.5.11 SEL_6 through SEL_0 ID lines 59	8
9.5.12 Device control codes 62	8
9.6 Signal characteristics 62	8
9.6.1 TTL input characteristics 62	8
9.6.2 LED driver signals 62	8
9.6.3 Differential PECL output 63	8
9.6.4 Differential PECL input 63	8
10.0 Seagate Technology support services 65	8
Figure 1. Cheetah 15K.3 FC family disc drive 1	9
Figure 2. Typical ST373453FC drive +12V current profile 22	9
Figure 3. Typical ST373453FC drive +5V current profile 23	9
Figure 4. Typical ST336753FC drive +12V current profile 23	9
Figure 5. Typical ST336753FC drive +5V current profile 24	9
Figure 6. Typical ST318453FC drive +12V current profile 24	9
Figure 7. Typical ST318453FC drive +5V current profile 25	9
Figure 8. ST373453FC DC current and power vs. input/output operations per second 26	9
Figure 9. ST336753FC DC current and power vs. input/output operations per second 26	9
Figure 10. ST318453FC DC current and power vs. input/output operations per second 27	9
Figure 11. Locations of the HDA temperature check point 28	9
Figure 12. Recommended mounting 30	9
Figure 13. Mounting configuration dimensions 32	9
Figure 14. Physical interface 35	9
Figure 15. LED indicator connector 36	9
Figure 16. Air flow 37	9
Figure 17. Physical interface 55	9
Figure 18. Port bypass circuit physical interconnect 55	9
Figure 19. FC-AL SCA device connector dimensions 56	9
Figure 20. J6 connector dimensions 56	9
Figure 21. FC-AL transmitters and receivers 58	9
Figure 22. Transmit eye diagram 63	9
Figure 23. Receive eye diagram 63	9
1.0 Scope	11
2.0 Applicable standards and reference documentation	13
2.1 Standards	13
2.1.1 Electromagnetic compatibility	13
2.1.1.1 Electromagnetic susceptibility	13
2.1.2 Electromagnetic compliance	13
2.2 Reference documents	14
3.0 General description	15
3.1 Standard features	16
3.2 Media description	16
3.3 Performance	16
3.4 Reliability	17
3.5 Unformatted and formatted capacities	17
3.6 Programmable drive capacity	17
3.7 Factory-installed accessories	17
3.8 Factory-installed options	17
3.9 User-installed accessories	17
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 for ³ 512-byte sectors (minutes)	19
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	20
4.5.1 Caching write data	21
4.5.2 Prefetch operation	22
4.5.3 Optimizing cache performance for desktop and server applications	22
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Interface errors	23
5.1.2 Environmental interference	23
5.1.3 Write errors	23
5.1.4 Seek errors	23
5.2 Reliability and service	24
5.2.1 Mean time between failure (MTBF)	24
5.2.2 Preventive maintenance	24
5.2.3 Service life	24
5.2.4 Service philosophy	24
5.2.5 Service tools	24
5.2.6 Hot plugging the drive	24
5.2.7 S.M.A.R.T.	25
5.2.8 Thermal monitor	26
5.2.9 Drive Self Test (DST)	27
5.2.9.1 DST failure definition	27
5.2.9.2 Implementation	27
5.2.9.2.1 State of the drive prior to testing	27
5.2.9.2.2 Invoking DST	28
5.2.9.2.3 Short and extended tests	28
5.2.9.2.4 Log page entries	28
5.2.9.2.5 Abort	28
5.2.10 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	32
6.2.2 Power sequencing	32
6.2.3 Current profiles	32
6.3 Power dissipation	36
6.4 Environmental limits	37
6.4.1 Temperature	37
6.4.2 Relative humidity	38
6.4.3 Effective altitude (sea level)	38
6.4.4 Shock and vibration	38
6.4.4.1 Shock	38
6.4.4.2 Vibration	41
6.4.5 Air cleanliness	41
6.4.6 Acoustics	41
6.4.7 Electromagnetic susceptibility	41
6.5 Mechanical specifications	42
7.0 Defect and error management	43
7.1 Drive internal defects/errors	43
7.2 Drive error recovery procedures	43
7.3 FC-AL system errors	44
8.0 Installation	45
8.1 Drive ID/option selection	45
8.2 LED connections	45
8.2.1 J6 connector requirements	46
8.3 Drive orientation	46
8.4 Cooling	46
8.5 Drive mounting	47
8.6 Grounding	47
9.0 Interface requirements	49
9.1 FC-AL features	49
9.1.1 Fibre Channel link service frames	49
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	51
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	64
9.5 FC-AL physical interface	65
9.5.1 Physical characteristics	65
9.5.1.1 Physical description	65
9.5.2 Connector requirements	66
9.5.3 Electrical description	67
9.5.4 Pin descriptions	67
9.5.5 FC-AL transmitters and receivers	68
9.5.6 Power	68
9.5.7 Fault LED Out	68
9.5.8 Active LED Out	68
9.5.9 Enable port bypass signals	69
9.5.10 Motor start controls	69
9.5.11 SEL_6 through SEL_0 ID lines	69
9.5.11.1 Parallel Enclosure Services Interface (ESI)	70
9.5.12 Device control codes	72
9.6 Signal characteristics	72
9.6.1 TTL input characteristics	72
9.6.2 LED driver signals	72
9.6.3 Differential PECL output	73
9.6.4 Differential PECL input	73
10.0 Seagate Technology support services	75
Numerics	79
A	79
B	79
C	79
D	79
E	80
F	80
G	81
H	81
I	81
J	81
L	81
M	81
N	82
O	82
P	82
Q	83
R	83
S	83
T	84
U	84
V	84
W	84
X	84

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Cheetah 15K.3 FC Product Manual, Rev. D

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 paragraph 6.2, "DC

power requirements."

•

The drive has been formatted with the FC-AL Format command.

•

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

•

Assume random data.

5.1.1

Interface errors

An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the

device port connected to the receiver. The error may be detected as a running disparity error, illegal code, loss

of word sync, or CRC error. The total error rate for a loop of devices is the sum of the individual device error

rates.

5.1.2

Environmental interference

When evaluating systems operation under conditions of electromagnetic interference (EMI), the performance

of the drive within the system is considered acceptable if the drive does not generate an unrecoverable condi-

tion.

An unrecoverable error, or condition, is defined as one that:

•

is not detected and corrected by the drive itself

•

is not detected from the error or fault status provided through the drive or FC-AL interface

•

is not recovered by normal drive or system recovery procedures without operator intervention

5.1.3

Write errors

Write errors can occur as a result of media defects, environmental interference, or equipment malfunction.

Therefore, write errors are not predictable as a function of the number of bits passed.

If an unrecoverable write error occurs because of an equipment malfunction in the drive, the error is classified

as a failure affecting MTBF. Unrecoverable write errors are those that cannot be corrected within two attempts

at writing the record with a read verify after each attempt (excluding media defects).

5.1.4

Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an

initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails,

a seek positioning error (15h) is reported with a Hardware error (4h) reported in the Sense Key. This is an unre-

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 errors 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, "Differential PECL input." on page 63

MTBF:

1,200,000 hours

Preventive maintenance:

None required