6.0Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the drive.
6.1AC power requirements
None.
6.2DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.
Table 12: ST3450856SS DC power requirements
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| ST3450856SS |
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| 1.5 Gbit mode |
| 3 Gbit mode |
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| Notes | (Amps) | (Amps) | (Amps) | (Amps) |
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Voltage |
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| +5V | +12V [2] | +5V | +12V [2] | ||||
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Regulation |
| [5] | ±5% | ±5% [2] | ±5% | ±5% [2] | ||||
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| [1] [7] | 0.55 | 0.75 | 0.57 | 0.75 |
Avg idle current DCX |
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Maximum starting current |
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(peak DC) DC | 3σ | [3] | 0.91 | 1.93 | 0.76 | 1.93 | ||||
(peak AC) AC | 3σ | [3] | 1.13 | 4.18 | 0.87 | 4.36 | ||||
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Delayed motor start (max) DC | [1] [4] | 0.60 | 0.04 | 0.63 | 0.04 | |||||
Peak operating current: |
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| [1][6] | [1] | 0.62 | 1.19 | 0.64 | 1.19 | ||
Typical DCX |
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Maximum DC | 3σ | [1] | 0.64 | 1.21 | 0.67 | 1.21 | ||||
Maximum (peak) DC | 3σ |
| 1.16 | 2.70 | 1.14 | 2.74 | ||||
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Cheetah 15K.6 SAS Product Manual, Rev. B | 23 |
