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Seagate 15K.2 Savvio 15K.2 SAS Product Manual - Page 29

Table 2, DC power requirements

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Table 2: ST9146852SS & ST9146752SS DC power requirements Notes 3.0 Gbit mode (Amps) (Amps) Voltage Regulation Avg idle current DC Maximum starting current (peak DC) DC (peak AC) AC Delayed motor start (max) DC Peak operating current: (random read) Typical DC Maximum DC Maximum (peak) DC Peak operating current: (random write) Typical DC Maximum DC Maximum (peak) DC Peak operating current: (sequential read) Typical DC Maximum DC Maximum (peak) DC Peak operating current: (sequential write) Typical DC Maximum DC Maximum (peak) DC [5] [1] [7] +5V ±5% 0.36 3σ [3] 0.51 3σ [3] 0.93 3σ [1] [4] 0.56 [1] [6] 0.45 3σ [1] 0.47 3σ 1.14 [1] 0.51 3σ [1] 0.54 3σ 1.16 [1] 0.88 3σ [1] 0.90 3σ 1.20 [1] 0.86 3σ [1] 0.92 3σ 1.18 +12V [2] ±5% [2] 0.21 1.12 1.77 0.05 0.41 0.41 1.24 0.32 0.33 1.22 0.22 0.22 0.48 0.22 0.22 0.46 6.0 Gbit mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.37 0.21 0.51 1.12 0.90 1.79 0.57 0.06 0.46 0.41 0.48 0.41 1.16 1.22 0.53 0.32 0.55 0.32 1.16 1.20 0.90 0.22 0.92 0.22 1.22 0.46 0.87 0.22 0.93 0.22 1.18 0.46 Savvio 15K.2 SAS Product Manual, Rev. C 21

Section	Page
1.0 Scope	9
2.0 Applicable standards and reference documentation	10
2.1 Standards	10
2.1.1 Electromagnetic compatibility	10
2.1.1.1 Electromagnetic susceptibility	10
2.1.2 Electromagnetic compliance	11
2.1.3 European Union Restriction of Hazardous Substances (RoHS)	12
2.2 Reference documents	12
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	15
3.7 Options	16
4.0 Performance characteristics	17
4.1 Internal drive characteristics	17
4.2 Seek performance characteristics	17
4.2.1 Access time	17
4.2.2 Format command execution time	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 Failure (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	25
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	26
5.2.7 Product warranty	27
6.0 Physical/electrical specifications	28
6.1 AC power requirements	28
6.2 DC power requirements	28
6.2.1 Conducted noise immunity	31
6.2.2 Power sequencing	31
6.2.3 Current profiles	32
6.3 Power dissipation	34
6.4 Environmental limits	36
6.4.1 Temperature	36
6.4.2 Relative humidity	36
6.4.3 Effective altitude (sea level)	37
6.4.4 Shock and vibration	37
6.4.4.1 Shock	37
6.4.4.2 Vibration	39
6.4.5 Air cleanliness	39
6.4.6 Corrosive environment	39
6.4.7 Acoustics	40
6.4.8 Electromagnetic susceptibility	40
6.5 Mechanical specifications	41
7.0 About self-encrypting drives	42
7.1 Data encryption	42
7.2 Controlled access	42
7.2.1 Admin SP	42
7.2.2 Locking SP	43
7.2.3 Default password	43
7.3 Random number generator (RNG)	43
7.4 Drive locking	43
7.5 Data bands	43
7.6 Cryptographic erase	44
7.7 Authenticated firmware download	44
7.8 Power requirements	44
7.9 Supported commands	44
8.0 Defect and error management	45
8.1 Drive internal defects/errors	45
8.2 Drive error recovery procedures	45
8.3 SAS system errors	46
8.4 Background Media Scan	47
8.5 Media Pre-Scan	47
8.6 Deferred Auto-Reallocation	47
8.7 Idle Read After Write	48
9.0 Installation	49
9.1 Drive orientation	49
9.2 Cooling	50
9.3 Drive mounting	51
9.4 Grounding	51
10.0 Interface requirements	52
10.1 SAS features	52
10.1.1 Task management functions	52
10.1.2 Task management responses	52
10.2 Dual port support	53
10.3 SCSI commands supported	54
10.3.1 Inquiry data	58
10.3.2 Mode Sense data	58
10.4 Miscellaneous operating features and conditions	62
10.4.1 SAS physical interface	63
10.4.2 Physical characteristics	66
10.4.3 Connector requirements	66
10.4.4 Electrical description	66
10.4.5 Pin descriptions	66
10.4.6 SAS transmitters and receivers	67
10.4.7 Power	68
10.5 Signal characteristics	68
10.5.1 Ready LED Out	68
10.5.2 Differential signals	68
10.6 SAS-2 Specification compliance	69
10.7 Additional information	69
11.0 Seagate Technology support services	70
Numerics	73
A	73
B	73
C	73
D	73
E	74
F	74
G	74
H	74
I	74
J	74
K	74
L	74
M	74
N	75
O	75
P	75
Q	75
R	75
S	76
T	76
U	76
V	76
W	76

Match case Limit results 1 per page

Savvio 15K.2 SAS Product Manual, Rev. C

Table 2:

ST9146852SS & ST9146752SS

DC power requirements

Notes

3.0 Gbit mode

6.0 Gbit mode

(Amps)

Voltage

+5V

+12V [2]

+5V

+12V [2]

Regulation

[5]

±5%

±5% [2]

±5%

±5% [2]

Avg idle current DC

[1] [7]

0.36

0.21

0.37

0.21

Maximum starting current

(peak DC) DC

[3]

0.51

1.12

0.51

1.12

(peak AC) AC

[3]

0.93

1.77

0.90

1.79

Delayed motor start (max) DC

[1] [4]

0.56

0.05

0.57

0.06

Peak operating current: (random read)

Typical DC

[1] [6]

0.45

0.41

0.46

0.41

Maximum DC

[1]

0.47

0.41

0.48

0.41

Maximum (peak) DC

1.14

1.24

1.16

1.22

Peak operating current: (random write)

Typical DC

[1]

0.51

0.32

0.53

0.32

Maximum DC

[1]

0.54

0.33

0.55

0.32

Maximum (peak) DC

1.16

1.22

1.16

1.20

Peak operating current: (sequential read)

Typical DC

[1]

0.88

0.22

0.90

0.22

Maximum DC

[1]

0.90

0.22

0.92

0.22

Maximum (peak) DC

1.20

0.48

1.22

0.46

Peak operating current: (sequential write)

Typical DC

[1]

0.86

0.22

0.87

0.22

Maximum DC

[1]

0.92

0.22

0.93

0.22

Maximum (peak) DC

1.18

0.46

1.18

0.46