Hitachi HDS725050KLA360 Specifications - Page 66

DC power requirements

Page 66 highlights

7.2.2 Corrosion test The drive shows no sign of corrosion inside and outside of the hard disk assembly and is functional after being subjected to seven days at 50°C with 90% relative humidity. 7.3 DC power requirements Damage to the drive electronics may result if the power supple cable is connected or disconnected to the legacy power connector while power is being applied to the drive (no hot plug/unplug is alloweed). If SATA power supply cable is connected or disconnected to the SATA power connector, hot plug/unplug is allowed. 7.3.1 Input voltage Table 46: Input voltage Input voltage supply During run and spin up Absolute max spike voltage1 Supply rise time +5 V 5 V ± 5% -0.3 to 7 V 0 to 5 sec +12 V 12 V + 10% -8% -0.3 to 15 V 0 to 5 sec 1To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifications. 7.3.2 Power supply current (typical) Table 47: Power supply current of PATA model Power supply current of PATA model +5 Volts [mA] +12 Volts [mA] Total [W] (values in milliamps. RMS) Idle average Idle ripple (peak-to-peak) Low RPM idle Low RPM idle ripple Unload idle average Unload idle ripple Random R/W average 1 Random R/W peak Silent R/W average Silent R/W peak Start up (max) Standby average Sleep average Pop Mean Std Dev Pop Mean Std Dev 380 12 590 12 9.0 330 40 630 20 200 7 280 10 4.4 220 30 380 20 200 7 480 13 6.8 220 35 600 20 560 9 850 20 13.0 1420 50 2100 60 610 9 660 15 11.0 1420 50 1350 40 1100 50 2000 75 150 9 20 3 1.0 100 8 20 3 0.7 Except for a peak of less than 100 ms duration 1 Random seeks at 40% duty cycle 2 Seek duty = 30%, W/R duty = 45%, Idle duty = 25% Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification 52

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
  • 248
  • 249
  • 250
  • 251
  • 252
  • 253
  • 254
  • 255
  • 256
  • 257
  • 258

Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
52
7.2.2
Corrosion test
The drive shows no sign of corrosion inside and outside of the hard disk assembly and is functional after being sub-
jected to seven days at 50°C with 90% relative humidity.
7.3
DC power requirements
Damage to the drive electronics may result if the power supple cable is connected or disconnected to the legacy
power connector while power is being applied to the drive (no hot plug/unplug is alloweed). If SATA power supply
cable is connected or disconnected to the SATA power connector, hot plug/unplug is allowed.
7.3.1
Input voltage
1
To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifications.
7.3.2
Power supply current (typical)
Except for a peak of less than 100 ms duration
1
Random seeks at 40% duty cycle
2
Seek duty = 30%, W/R duty = 45%, Idle duty = 25%
Table 46: Input voltage
Input voltage
supply
During run and spin up
Absolute max spike
voltage
1
Supply rise time
+5 V
5 V ± 5%
–0.3 to 7 V
0 to 5 sec
+12 V
12 V + 10% –8%
–0.3 to 15 V
0 to 5 sec
Table 47: Power supply current of PATA model
Power supply current of
PATA
model
+5 Volts [mA]
+12 Volts [mA]
Total
[W]
(values in milliamps. RMS)
Pop Mean
Std Dev
Pop Mean
Std Dev
Idle average
380
12
590
12
9.0
Idle ripple (peak-to-peak)
330
40
630
20
Low RPM idle
200
7
280
10
4.4
Low RPM idle ripple
220
30
380
20
Unload idle average
200
7
480
13
6.8
Unload idle ripple
220
35
600
20
Random R/W average
1
560
9
850
20
13.0
Random R/W peak
1420
50
2100
60
Silent R/W average
610
9
660
15
11.0
Silent R/W peak
1420
50
1350
40
Start up (max)
1100
50
2000
75
Standby average
150
9
20
3
1.0
Sleep average
100
8
20
3
0.7