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Seagate 15K.3 ST373453FC Model Product Manual PDF - Page 24

Fibre Channel Interface Manual

UPC - 000004165019

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14 Cheetah 15K.3 FC Product Manual, Rev. D coverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the Fibre Channel Interface Manual, part number 77767496, for Request Sense information. 5.2 Reliability and service You can enhance the reliability of Cheetah 15K.3 FC disc drives by ensuring that the drive receives adequate cooling. Section 6.0 provides recommended air-flow information, temperature measurements, and other information, which you can use to enhance the service life of the drive. 5.2.1 Mean time between failure (MTBF) The production disc drive achieves an MTBF of 1,200,000 hours when operated in an environment that ensures the case temperatures specified in Section 6.4.1 are not exceeded. Short-term excursions up to the specification limits of the operating environment will not affect MTBF performance. Operating the drive at case temperatures above these values will adversely affect the drive's ability to meet specifications (see Section 6.4, "Environmental limits"). The MTBF target is specified as device power-on hours (POH) for all drives in service per failure. The following expression defines MTBF: MTBF per measurement period = Estimated power-on operating hours in the period Number of drive failures in the period Estimated power-on operating hours means power-on hours per disc drive times the total number of disc drives in service. Each disc drive must have accumulated at least nine months of operation. Data is calculated on a rolling average base for a minimum period of six months. MTBF is based on the following assumptions: • 8,760 power-on hours per year • 250 average on/off cycles per year • Operating at nominal voltages • System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not exceeded. Drive failure means any stoppage or failure to meet defined specifications caused by drive malfunction. A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered an MTBF hit. 5.2.2 Preventive maintenance No routine scheduled preventive maintenance is required. 5.2.3 Service life Depot repair or replacement of major parts is permitted during the service lifetime. 5.2.4 Service philosophy Special equipment is required to repair the drive HDA. Repairs must be performed only at a properly equipped and staffed Seagate service and repair facility. Troubleshooting and repair of PCBs in the field is not recommended because of the extensive diagnostic equipment required for effective servicing. There are not spare parts available for this drive. The drive warranty is voided if the HDA is opened. 5.2.5 Service tools No special tools are required for site installation or recommended for site maintenance. Refer to Section 5.2.4. The depot repair philosophy of the drive precludes the necessity for special tools. Field repair of the drive is not practical because users cannot purchase individual parts for the drive. 5.2.6 Hot plugging the drive Inserting and removing the drive on the FC-AL will interrupt loop operation. The interruption occurs when the receiver of the next device in the loop must synchronize to a different input signal. FC error detection mecha-

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

Match case Limit results 1 per page

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

coverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the

Fibre Channel Interface Manual

, part number 77767496, for Request Sense information.

5.2

Reliability and service

You can enhance the reliability of Cheetah 15K.3 FC disc drives by ensuring that the drive receives adequate

cooling. Section 6.0 provides recommended air-flow information, temperature measurements, and other infor-

mation, which you can use to enhance the service life of the drive.

5.2.1

Mean time between failure (MTBF)

The production disc drive achieves an MTBF of 1,200,000 hours when operated in an environment that

ensures the case temperatures specified in Section 6.4.1 are not exceeded. Short-term excursions up to the

specification limits of the operating environment will not affect MTBF performance. Operating the drive at case

temperatures above these values will adversely affect the drive’s ability to meet specifications (see Section 6.4,

"Environmental limits").

The MTBF target is specified as device power-on hours (POH) for all drives in service per failure.

The following expression defines MTBF:

Estimated power-on operating hours means power-on hours per disc drive times the total number of disc drives

in service. Each disc drive must have accumulated at least nine months of operation. Data is calculated on a

rolling average base for a minimum period of six months.

MTBF is based on the following assumptions:

•

8,760 power-on hours per year

•

250 average on/off cycles per year

•

Operating at nominal voltages

•

System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not

exceeded.

Drive failure means any stoppage or failure to meet defined specifications caused by drive malfunction.

A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered

an MTBF hit.

5.2.2

Preventive maintenance

No routine scheduled preventive maintenance is required.

5.2.3

Service life

Depot repair or replacement of major parts is permitted during the service lifetime.

5.2.4

Service philosophy

Special equipment is required to repair the drive HDA. Repairs must be performed only at a properly equipped

and staffed Seagate service and repair facility. Troubleshooting and repair of PCBs in the field is not recom-

mended because of the extensive diagnostic equipment required for effective servicing. There are not spare

parts available for this drive. The drive warranty is voided if the HDA is opened.

5.2.5

Service tools

No special tools are required for site installation or recommended for site maintenance. Refer to Section 5.2.4.

The depot repair philosophy of the drive precludes the necessity for special tools. Field repair of the drive is not

practical because users cannot purchase individual parts for the drive.

5.2.6

Hot plugging the drive

Inserting and removing the drive on the FC-AL will interrupt loop operation. The interruption occurs when the

receiver of the next device in the loop must synchronize to a different input signal. FC error detection mecha-

MTBF per measurement period

Estimated power-on operating hours in the period

Number of drive failures in the period