Seagate Savvio 10K.5 SAS, Product Manual

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S
AVVIO
10K.5 SAS P
RODUCT
M
ANUAL
, R
EV
. J 24
[1] Measured with average reading DC ammeter. Instant12V current peaks will exceed these values. Power sup-
ply 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 9,936 RPM.
The ±5% must be maintained 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 900GB models) and Figure 2 (for 600GB models).
[4] See +12V current profile in Figure 3 (for 450GB models) and Figure 4 (for 300GB models).
[5] This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup
primitive.
[6] See paragraph 6.3.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient
response.
[7] Operating condition is defined as random 8 block reads.
[8] During idle, the drive heads are relocated every 30 seconds to a random location within the band from three-quarters to
maximum track.
Table 5 300GB standard model DC power requirements
N
OTES
3.0G
B MODE
6.0G
B MODE
(A
MPS
) (A
MPS
) (A
MPS
) (A
MPS
)
Voltage +5V +12V [2] +5V +12V [2]
Regulation [6] ±5% ±5% [2] ±5% ±5% [2]
Avg idle current DC [1] [8] 0.34 0.15 0.35 0.15
Advanced Idle Current
Idle_A 3 σ 0.37 0.16 0.38 0.16
Idle_B 3
σ
0.25 0.14 0.26 0.14
Idle_C 3
σ
0.25 0.08 0.26 0.08
Standby 3 σ 0.25 0.06 0.26 0.06
Maximum starting current
(peak DC) DC 3
σ
[4] 0.59 0.85 0.58 0.85
(peak AC) AC 3 σ [4] 0.96 1.52 0.93 1.48
Delayed motor start (max) DC 3
σ
[1] [5] 0.45 0.06 0.46 0.06
Peak operating current (random read):
Typical DC [1] [7] 0.46 0.43 0.46 0.43
Maximum DC 3
σ
[1] 0.49 0.45 0.50 0.46
Maximum (peak) DC 3
σ
1.25 1.47 1.27 1.51
Peak operating current (random write)
Typical DC 0.54 0.34 0.55 0.34
Maximum DC 3 σ 0.56 0.39 0.57 0.39
Maximum (peak) DC 3
σ
1.13 1.49 1.13 1.49
Peak operating current (sequential read)
Typical DC 0.80 0.17 0.80 0.16
Maximum DC 3
σ
0.90 0.18 0.90 0.18
Maximum (peak) DC 3
σ
1.13 0.34 1.20 0.33
Peak operating current (sequential write)
Typical DC 0.87 0.16 0.87 0.16
Maximum DC 3
σ
0.98 0.18 0.99 0.18
Maximum (peak) DC 3 σ 1.26 0.32 1.30 0.30