Western Digital Ultrastar DC HC310 - Table 17 SATA Power Consumption, 4 TB, 512 N

23
Western Digital Hard Disk Drive OEM Specification
6.3.2.3 SATA, 4TB, Block Size 512n, 6Gb/sec
Model: SATA @ 6Gb/sec
4TB Model
Block size: 512 native
Current
Current
Power
IO/Sec
+5V Amp
+12V Amp
Watts
Start up Peak DC [1]
0.35
1.56
Start up Peak AC
0.60
1.98
Idle_0, Avg
0.20
0.35
5.2
Idle Ripple
0.13
0.26
Random Peak [4]
0.78
1.88
Random RW 8kB Qd=1 Avg
40
0.23
0.45
6.6
Random RW 4kB Qd=1 Avg
83
0.22
0.56
7.8
Random RW 4kB Qd=4 Avg
114
0.22
0.64
8.8
Random R 4kB Qd=8 Avg [5]
144
0.22
0.70
9.5
Sequential Read Peak [4]
0.78
Sequential Read Avg [2]
0.51
0.36
6.9
Sequential Write Peak [4]
0.51
Sequential Write Avg [2]
0.42
0.40
6.9
Power Save Modes
Current
Power
Power
Saved
Recovery [1]
(PHY state: Active)
+5V Amp
+12V Amp
Watts
Watts[3]
12V DC
Peak
12V AC
Peak
Idle_A
0.20
0.35
5.2
0.0
Idle_B
0.11
0.30
4.2
1.0
Idle_C
0.11
0.22
3.2
2.0
1.00
1.17
Standby_Y
0.11
0.22
3.2
2.0
1.00
1.17
Sleep, Standby_Z
0.11
0.01
0.6
4.6
1.56
1.78
PHY power condition
Partial
0.2
Slumber
0.2
Notes
Sample size
10 HDD per model
Temperature
DE temperature = 40°C (25°C for Spin up)
Write Cache Enable
Off
Bandwidth
All measurements are bandwidth limited to 20MHz
PHY
Single port, 6Gb/s
[1] 200ms windowed average
[2] Max transfer rate
[3] Power saved compared to Idle_0
[4] Maximum single peak in test samples
[5] Maximum power workload
Table 17 SATA Power Consumption, 4TB, 512n