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Environmental limits

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6.4 Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximum wet bulb temperature is 82°F (28°C). 6.4.1 Temperature a. Operating The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure Rate (AFR) is 122°F (50°C) The maximum allowable HDA case temperature is 60°C. Occasional excursions of HDA case temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to the specified AFR. Continual or sustained operation at HDA case temperatures outside these limits may degrade AFR. Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 86°F (30°C) per hour. Air flow may be needed in the drive enclosure to keep within this range (see Section 8.3). Operation at HDA case temperatures outside this range may adversely affect the drives ability to meet specifications. To confirm that the required cooling for the electronics and HDA case is provided, place the drive in its final mechanical configuration, perform random write/read operations and measure the HDA case temperature after it has stabilized. b. Non-operating -40° to 158°F (-40° to 70°C) package ambient with a maximum gradient of 86°F (30°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp. Check Point 1.0" .5" Figure 7. Locations of the HDA temperature check point 6.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour. b. Non-operating 5% to 95% non-condensing relative humidity. 32 Cheetah NS 10K.2 FC Product Manual, Rev. B

Section	Page
1.0 Scope 1	3
2.0 Standards, compliance and reference documents 3	3
2.1 Standards 3	3
2.1.1 Electromagnetic compatibility 3	3
2.2 Compliance 4	3
2.2.1 Electromagnetic compliance 4	3
2.3 Reference documents 5	3
3.0 General description 7	3
3.1 Standard features 8	3
3.2 Media description 8	3
3.3 Performance 9	3
3.4 Reliability 9	3
3.5 Formatted capacities 9	3
3.6 Programmable drive capacity 10	3
3.7 Factory-installed options 10	3
3.8 User-installed accessories 10	3
4.0 Performance characteristics 11	3
4.1 Internal drive characteristics 11	3
4.2 Seek performance 11	3
4.2.1 Access time 11	3
4.2.2 Format command execution time (minutes) 12	3
4.2.3 General performance characteristics 12	3
4.3 Start/stop time 12	3
4.4 Prefetch/multi-segmented cache control 13	3
4.5 Cache operation 13	3
4.5.1 Caching write data 14	3
4.5.2 Prefetch operation 14	3
5.0 Reliability specifications 15	3
5.1 Error rates 15	3
5.1.1 Recoverable Errors 15	3
5.1.2 Unrecoverable Errors 15	3
5.1.3 Seek errors 16	3
5.1.4 Interface errors 16	3
5.2 Reliability and service 16	3
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) 16	3
5.2.2 Preventive maintenance 16	3
5.2.3 Hot plugging the drive 16	3
5.2.4 S.M.A.R.T. 17	3
5.2.5 Thermal monitor 18	3
5.2.6 Drive Self Test (DST) 19	3
5.2.7 Product warranty 21	3
6.0 Physical/electrical specifications 23	3
6.1 AC power requirements 23	3
6.2 DC power requirements 23	3
6.2.1 Conducted noise immunity 26	3
6.2.2 Power sequencing 26	3
6.2.3 Current profiles 26	3
6.3 Power dissipation 29	3
6.4 Environmental limits 32	3
6.4.1 Temperature 32	3
6.4.2 Relative humidity 32	4
6.4.3 Effective altitude (sea level) 33	4
6.4.4 Shock and vibration 33	4
6.4.5 Acoustics 35	4
6.4.6 Air cleanliness 35	4
6.4.7 Corrosive environment 35	4
6.4.8 European Union Restriction of Hazardous Substances (RoHS) Directive 36	4
6.4.9 China Restriction of Hazardous Substances (RoHS) Directive 36	4
6.4.10 Electromagnetic susceptibility 36	4
6.5 Mechanical specifications 37	4
7.0 Defect and error management 39	4
7.1 Drive internal defects/errors 39	4
7.2 Drive error recovery procedures 39	4
7.3 FC-AL system errors 41	4
7.4 Background Media Scan 41	4
7.5 Media Pre-Scan 41	4
7.6 Deferred Auto-Reallocation 42	4
7.7 Idle Read After Write 42	4
8.0 Installation 43	4
8.1 Drive ID/option selection 43	4
8.2 Drive orientation 43	4
8.3 Cooling 43	4
8.4 Drive mounting 44	4
8.5 Grounding 45	4
9.0 Interface requirements 47	4
9.1 FC-AL features 47	4
9.1.1 Fibre Channel link service frames 47	4
9.1.2 Fibre Channel task management functions 48	4
9.1.3 Fibre Channel task management responses 48	4
9.1.4 Fibre Channel port login 49	4
9.1.5 Fibre Channel port login accept 50	4
9.1.6 Fibre Channel Process Login 50	4
9.1.7 Fibre Channel Process Login Accept 51	4
9.1.8 Fibre Channel fabric login 51	4
9.1.9 Fibre Channel fabric accept login 52	4
9.1.10 Fibre Channel Arbitrated Loop options 53	4
9.2 Dual port support 53	4
9.3 SCSI commands supported 54	4
9.3.1 Inquiry data 58	4
9.3.2 Mode Sense data 58	4
9.4 Miscellaneous operating features and conditions 63	4
9.5 FC-AL physical interface 64	4
9.5.1 Physical characteristics 64	4
9.5.2 Connector requirements 65	4
9.5.3 Electrical description 65	4
9.5.4 Pin descriptions 65	4
9.5.5 FC-AL transmitters and receivers 66	4
9.5.6 Power 67	4
9.5.7 Fault LED Out 67	4
9.5.8 Active LED Out 68	4
9.5.9 Enable port bypass signals 68	4
9.5.10 Motor start controls 68	4
9.5.11 SEL_6 through SEL_0 ID lines 69	4
9.5.12 Device control codes 71	5
9.6 Signal characteristics 71	5
9.6.1 TTL input characteristics 71	5
9.6.2 LED driver signals 72	5
9.6.3 FC Differential output 72	5
9.6.4 FC Differential input 72	5
10.0 Seagate Technology support services 75	5
1.0 Scope	7
2.0 Standards, compliance and reference documents	9
2.1 Standards	9
2.1.1 Electromagnetic compatibility	9
2.1.1.1 Electromagnetic susceptibility	9
2.2 Compliance	10
2.2.1 Electromagnetic compliance	10
2.3 Reference documents	11
3.0 General description	13
3.1 Standard features	14
3.2 Media description	14
3.3 Performance	15
3.4 Reliability	15
3.5 Formatted capacities	15
3.6 Programmable drive capacity	16
3.7 Factory-installed options	16
3.8 User-installed accessories	16
4.0 Performance characteristics	17
4.1 Internal drive characteristics	17
4.2 Seek performance	17
4.2.1 Access time	17
4.2.2 Format command execution time (minutes)	18
4.2.3 General performance characteristics	18
4.3 Start/stop time	18
4.4 Prefetch/multi-segmented cache control	19
4.5 Cache operation	19
4.5.1 Caching write data	20
4.5.2 Prefetch operation	20
5.0 Reliability specifications	21
5.1 Error rates	21
5.1.1 Recoverable Errors	21
5.1.2 Unrecoverable Errors	21
5.1.3 Seek errors	22
5.1.4 Interface errors	22
5.2 Reliability and service	22
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)	22
5.2.2 Preventive maintenance	22
5.2.3 Hot plugging the drive	22
5.2.4 S.M.A.R.T.	23
5.2.5 Thermal monitor	24
5.2.6 Drive Self Test (DST)	25
5.2.6.1 DST failure definition	25
5.2.6.2 Implementation	25
5.2.6.2.1 State of the drive prior to testing	25
5.2.6.2.2 Invoking DST	26
5.2.6.2.3 Short and extended tests	26
5.2.6.2.4 Log page entries	26
5.2.6.2.5 Abort	27
5.2.7 Product warranty	27
6.0 Physical/electrical specifications	29
6.1 AC power requirements	29
6.2 DC power requirements	29
6.2.1 Conducted noise immunity	32
6.2.2 Power sequencing	32
6.2.3 Current profiles	32
6.3 Power dissipation	35
6.4 Environmental limits	38
6.4.1 Temperature	38
6.4.2 Relative humidity	38
6.4.3 Effective altitude (sea level)	39
6.4.4 Shock and vibration	39
6.4.4.1 Shock	39
6.4.4.2 Vibration	41
6.4.5 Acoustics	41
6.4.6 Air cleanliness	41
6.4.7 Corrosive environment	41
6.4.8 European Union Restriction of Hazardous Substances (RoHS) Directive	42
6.4.9 China Restriction of Hazardous Substances (RoHS) Directive	42
6.4.10 Electromagnetic susceptibility	42
6.5 Mechanical specifications	43
7.0 Defect and error management	45
7.1 Drive internal defects/errors	45
7.2 Drive error recovery procedures	45
7.3 FC-AL system errors	47
7.4 Background Media Scan	47
7.5 Media Pre-Scan	47
7.6 Deferred Auto-Reallocation	48
7.7 Idle Read After Write	48
8.0 Installation	49
8.1 Drive ID/option selection	49
8.2 Drive orientation	49
8.3 Cooling	49
8.4 Drive mounting	50
8.5 Grounding	51
9.0 Interface requirements	53
9.1 FC-AL features	53
9.1.1 Fibre Channel link service frames	53
9.1.2 Fibre Channel task management functions	54
9.1.3 Fibre Channel task management responses	54
9.1.4 Fibre Channel port login	55
9.1.5 Fibre Channel port login accept	56
9.1.6 Fibre Channel Process Login	56
9.1.7 Fibre Channel Process Login Accept	57
9.1.8 Fibre Channel fabric login	57
9.1.9 Fibre Channel fabric accept login	58
9.1.10 Fibre Channel Arbitrated Loop options	59
9.2 Dual port support	59
9.3 SCSI commands supported	60
9.3.1 Inquiry data	64
9.3.2 Mode Sense data	64
9.4 Miscellaneous operating features and conditions	69
9.5 FC-AL physical interface	70
9.5.1 Physical characteristics	70
9.5.1.1 Physical description	70
9.5.2 Connector requirements	71
9.5.3 Electrical description	71
9.5.4 Pin descriptions	71
9.5.5 FC-AL transmitters and receivers	72
9.5.6 Power	73
9.5.7 Fault LED Out	73
9.5.8 Active LED Out	74
9.5.9 Enable port bypass signals	74
9.5.10 Motor start controls	74
9.5.11 SEL_6 through SEL_0 ID lines	75
9.5.11.1 Parallel Enclosure Services Interface (ESI)	75
9.5.12 Device control codes	77
9.6 Signal characteristics	77
9.6.1 TTL input characteristics	77
9.6.2 LED driver signals	78
9.6.3 FC Differential output	78
9.6.4 FC Differential input	78

Match case Limit results 1 per page

Cheetah NS 10K.2 FC Product Manual, Rev. B

6.4

Environmental limits

Temperature and humidity values experienced by the drive must be such that condensation does not occur on

any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F

(14.8°C). Maximum wet bulb temperature is 82°F (28°C).

6.4.1

Temperature

a. Operating

The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure

Rate (AFR) is 122°F (50°C)

The maximum allowable HDA case temperature is 60°C. Occasional excur-

sions of HDA case temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to the

specified AFR. Continual or sustained operation at HDA case temperatures outside these limits may

degrade AFR.

Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F

(5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 86°F (30°C) per

hour. Air flow may be needed in the drive enclosure to keep within this range (see Section 8.3). Operation at

HDA case temperatures outside

this range may adversely affect the drives ability to meet specifications. To

confirm that the required cooling for the electronics and HDA case is provided, place the drive in its final

mechanical configuration, perform random write/read operations and measure the HDA case temperature

after it has stabilized.

b. Non-operating

–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 86°F (30°C) per hour. This

specification assumes that the drive is packaged in the shipping container designed by Seagate for use with

drive.

HDA Temp.

Check Point

.5"

1.0"

Figure 7.

Locations of the HDA temperature check point

6.4.2

Relative humidity

The values below assume that no condensation on the drive occurs.

a. Operating

5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.

b. Non-operating

5% to 95% non-condensing relative humidity.