Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 46)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
30
9.1 Power Supply Current, Average and Peak
The following current and power requirements are typical when operating under the following conditions: Nominal 5 and 12V,
Background Media Scan (BMS) disabled for Idle, Write Caching disabled and the drive reporting a temperature of 45C.
M odel FC 4 Gb/ s 4 5 0 GB Cur r ent Cur r ent Power Note
IO / Sec +5 V +1 2 V Watts
Star t Peak Power DC --- 1 .9 2 ---
Star t Peak Power AC 1 .1 1 2 .4 5
Idle 0 .8 3 0 .7 2 1 2 .7 Aver age
Idle Ripple 0 .2 5 0 .2 6 --- Peak to Peak
Random W / R Peak 2 0 6 1 .3 6 2 .2 6 2 KB Qd=4
Random W / R Aver age 2 0 6 0 .8 6 1 .0 7 1 7 .1 2 KB Qd=4
Random W / R Aver age 1 5 8 0 .8 4 1 .0 4 1 6 .6 2 KB Qd=1
1 2 0 0 .8 4 1 .0 1
9 0 0 .8 4 0 .9 9
6 0 0 .8 4 0 .9 8
3 0 0 .8 4 0 .9 7
Sequential Read Peak 1 .6 0 M axim um T r ansfer Rate
Sequential Read Aver age 1 .3 6 0 .7 4 1 5 .7 M axim um T r ansfer Rate
Sequential Wr ite Peak 1 .6 5 --- --- M axim um T r ansfer Rate
Sequential Wr ite Aver age 1 .3 7 0 .7 4 1 5 .7 M axim um T r ansfer Rate
BM S Aver age 0 .9 2 0 .7 4 1 3 .5
BM S Peak 1 .5 4
5V
12V
Spin up
Calibrate
Power on
12 V
2 Sec / Div
1A / Div
Peak DC
Peak AC 450 GB
2 A
1 A
0 A
0 A
1 A
5 V
2 Sec / Div
0.5A / Div
Spin up
Calibrate
Power on
12 V
2 Sec / Div
1A / Div
Peak DC
Peak AC 450 GB
2 A
1 A
0 A
0 A
1 A
5 V
2 Sec / Div
0.5A / Div