www.seagate.com | Drive Specifications |
case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for
• Read/write power and current
Read/write power is measured with the heads on track, based on a
• Operating power and current
Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.
• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.
• Standby mode
During standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/write electronics are in
Table 2 DC power requirements (3TB)
Power dissipation | Avg (watts 25° C) | Avg 5V typ amps | Avg 12V typ amps |
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Spinup | — | — | 2.0 (peak) |
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Idle* † | 7.37 | 0.272 | 0.501 |
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Operating (average) | 9.2 | 0.628 | 0.506 |
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Standby | 0.55 | 0.082 | 0.012 |
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Sleep | 0.55 | 0.082 | 0.012 |
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Table 3 DC power requirements (2TB) |
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Power dissipation | Avg (watts 25° C) | Avg 5V typ amps | Avg 12V typ amps |
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Spinup | — | — | 2.8 (peak) |
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Idle* † | 6.39 | 0.27 | 0.42 |
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Operating (average) | 9.23 | 0.31 | 0.64 |
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Standby | 0.57 | 0.09 | 0.01 |
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Sleep | 0.57 | 0.09 | 0.01 |
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*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.
†5W IDLE with DIPLM Enabled
Note | Drive supports PHY layer power management. When enabled, a power savings of ~300mw can be |
achieved in idle, standby and sleep modes. | |
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Barracuda XT SATA Product Manual, Rev. D | 13 |
