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Seagate ST3300457FC Cheetah 15K.7 FC Product Manual - Page 52

Cooling

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11.3 Cooling The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed to ensure that the drive operates within the temperature measurement guidelines described in Section 7.4.1. In some cases, forced airflow may be required to keep temperatures at or below the temperatures specified in Section 7.4.1. If forced air is necessary, possible air-flow patterns are shown in Figure 11. The air-flow patterns are created by fans either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guidelines of Section 7.4.1 are met. Above unit Under unit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Note. Air flows in the direction shown or in reverse direction (side to side) Figure 11. Air flow Above unit Under unit 46 Cheetah 15K.7 FC Product Manual, Rev. C

Section	Page
1.0 Seagate Technology support services	7
2.0 Scope	8
3.0 Applicable standards and reference documentation	9
3.1 Standards	9
3.1.1 Electromagnetic compatibility	9
3.1.1.1 Electromagnetic susceptibility	9
3.1.2 Electromagnetic compliance	10
3.2 European Union Restriction of Hazardous Substances (RoHS)	10
3.3 Reference documents	11
4.0 General description	12
4.1 Standard features	13
4.2 Media description	14
4.3 Performance	14
4.4 Reliability	14
4.5 Formatted capacities	14
4.5.1 Programmable drive capacity	15
4.6 Factory-installed options	15
4.7 User-installed accessories	15
5.0 Performance characteristics	16
5.1 Internal drive characteristics	16
5.2 Seek performance characteristics	16
5.2.1 Access time	16
5.2.2 Format command execution time (minutes)	17
5.2.3 General performance characteristics	17
5.3 Start/stop time	17
5.4 Prefetch/multi-segmented cache control	18
5.5 Cache operation	18
5.5.1 Caching write data	19
5.5.2 Prefetch operation	19
6.0 Reliability specifications	20
6.1 Error rates	20
6.1.1 Recoverable Errors	20
6.1.2 Unrecoverable Errors	20
6.1.3 Seek errors	21
6.1.4 Interface errors	21
6.2 Reliability and service	21
6.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)	21
6.2.2 Preventive maintenance	21
6.2.3 Hot plugging the drive	21
6.2.4 S.M.A.R.T.	22
6.2.5 Thermal monitor	23
6.2.6 Drive Self Test (DST)	24
6.2.6.1 DST failure definition	24
6.2.6.2 Implementation	24
6.2.7 Product warranty	26
7.0 Physical/electrical specifications	27
7.1 AC power requirements	27
7.2 DC power requirements	27
7.2.1 Conducted noise immunity	30
7.2.2 Power sequencing	30
7.2.3 Current profiles	30
7.3 Power dissipation	33
7.4 Environmental limits	35
7.4.1 Temperature	35
7.4.2 Relative humidity	36
7.4.3 Effective altitude (sea level)	36
7.4.4 Shock and vibration	37
7.4.4.1 Shock	37
7.4.4.2 Vibration	39
7.4.5 Acoustics	39
7.4.6 Air cleanliness	39
7.4.7 Corrosive environment	40
7.4.8 RoHS compliance statement	40
7.4.9 Electromagnetic susceptibility	40
7.5 Mechanical specifications	41
8.0 About FIPS	42
9.0 About self-encrypting drives	43
9.1 Data encryption	43
9.2 Controlled access	43
9.2.1 Admin SP	43
9.2.2 Locking SP	44
9.2.3 Default password	44
9.3 Random number generator (RNG)	44
9.4 Drive locking	44
9.5 Data bands	44
9.6 Cryptographic erase	45
9.7 Authenticated firmware download	45
9.8 Power requirements	45
9.9 Supported commands	45
10.0 Defect and error management	46
10.1 Drive internal defects/errors	46
10.2 Drive error recovery procedures	46
10.3 FC-AL system errors	48
10.4 Background Media Scan	49
10.5 Media Pre-Scan	49
10.6 Deferred Auto-Reallocation	49
10.7 Idle Read After Write	50
11.0 Installation	51
11.1 Drive ID/option selection	51
11.2 Drive orientation	51
11.3 Cooling	52
11.4 Drive mounting	53
11.5 Grounding	53
12.0 Interface requirements	54
12.1 FC-AL features	54
12.1.1 Fibre Channel link service frames	54
12.1.2 Fibre Channel task management functions	55
12.1.3 Fibre Channel task management responses	55
12.1.4 Fibre Channel port login	56
12.1.5 Fibre Channel port login accept	57
12.1.6 Fibre Channel Process Login	57
12.1.7 Fibre Channel Process Login Accept	58
12.1.8 Fibre Channel fabric login	58
12.1.9 Fibre Channel fabric accept login	59
12.1.10 Fibre Channel Arbitrated Loop options	60
12.2 Dual port support	60
12.3 SCSI commands supported	60
12.3.1 Inquiry data	65
12.3.2 Mode Sense data	65
12.4 Miscellaneous operating features and conditions	70
12.5 FC-AL physical interface	71
12.5.1 Physical characteristics	71
12.5.1.1 Physical description	71
12.5.2 Connector requirements	72
12.5.3 Electrical description	72
12.5.4 Pin descriptions	72
12.5.5 FC-AL transmitters and receivers	73
12.5.6 Power	74
12.5.7 Fault LED Out	74
12.5.8 Active LED Out	75
12.5.9 Enable port bypass signals	75
12.5.10 Motor start controls	75
12.5.11 SEL_6 through SEL_0 ID lines	76
12.5.11.1 Parallel Enclosure Services Interface (ESI)	76
12.5.12 Device control codes	78
12.6 Signal characteristics	78
12.6.1 TTL input characteristics	78
12.6.2 LED driver signals	79
12.6.3 FC Differential output	79

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Cheetah 15K.7 FC Product Manual, Rev. C

11.3

Cooling

The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed

to ensure that the drive operates within the temperature measurement guidelines described in Section 7.4.1. In

some cases, forced airflow may be required to keep temperatures at or below the temperatures specified in

Section 7.4.1.

If forced air is necessary, possible air-flow patterns are shown in Figure 11. The air-flow patterns are created by

fans either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow

patterns are acceptable as long as the temperature measurement guidelines of Section 7.4.1 are met.

Figure 11.

Air flow

Above unit

Under unit

Note.

Air flows in the direction shown (back to front)

or in reverse direction (front to back)

Above unit

Under unit

Note.

Air flows in the direction shown or

in reverse direction (side to side)