Seagate Constellation ST4000NM0023 Product Manual page 28
Constellation es.3 sas standard models,sed (fips 140-2) models,self-encrypting drive models
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- Product manual (88 pages) ,
- Product manual (56 pages)
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Table 5 1TB drive DC power requirements
Voltage
Regulation
Avg idle current DCX
Advanced idle current
Idle A
Idle B
Idle C
Standby
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC
Peak operating current (random read):
Typical DCX
Maximum DC
Maximum (peak) DC
Peak operating current (random write)
Typical DCX
Maximum DC
Maximum (peak) DC
Peak operating current (sequential read)
Typical DCX
Maximum DC
Maximum (peak) DC
Peak operating current (sequential write)
Typical DCX
Maximum DC
Maximum (peak) DC
[1]
Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power supply at nominal voltage. N
(number of drives tested) = 6, 35 Degrees C ambient.
[2]
For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ± 5% before reaching 7200 RPM. The ± 5% must be main-
tained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator.
[3]
See +12V current profile in Figure 1. (for 4TB models)
[4]
This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive.
[5]
See paragraph 6.3.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response.
[6]
Operating condition is defined as random 8 block reads.
[7]
During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track.
C
ES.3 SAS P
ONSTELLATION
3s
3s
3s
3s
3s
3s
3s
3s
3s
3s
3s
3s
3s
3s
3s
M
, R
. C
RODUCT
ANUAL
EV
3.0G
B MODE
N
OTES
(A
)
(A
MPS
MPS
+5V
+12V [2]
[5]
± 5% [2]
[1] [7]
0.34
0.27
0.31
0.27
0.23
0.24
0.23
0.16
0.22
0.01
[3]
0.59
2.19
[3]
0.77
2.73
[1] [4]
0.55
0.01
[1] [6]
0.46
0.54
[1]
0.77
0.59
1.66
2.17
[1]
0.51
0.44
[1]
0.83
0.48
1.04
2.07
[1]
0.72
0.31
[1]
0.97
0.33
1.32
0.64
[1]
0.56
0.34
[1]
0.58
0.36
0.94
1.89
6.0G
B MODE
)
(A
)
(A
)
MPS
MPS
+5V
+12V [2]
± 5% [2]
0.32
0.27
0.32
0.27
0.23
0.24
0.24
0.16
0.22
0.00
0.58
2.18
0.75
2.70
0.25
0.01
0.49
0.54
0.83
0.59
1.75
2.11
0.49
0.44
0.83
0.48
1.05
2.10
0.69
0.31
0.73
0.33
1.47
0.69
0.56
0.34
0.58
0.36
0.74
1.21
23
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