Specification Sheet

Seagate BarraCuda Product Manual, Rev. D 12
www.seagate.com Drive Specifications
2.7 Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. Refer to Figure 1 on page 20.
2.7.1 Power consumption
Power requirements for the drives are listed in Table 3 and Table 4. Typical power measurements are based on an average
of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature. These power
measurements are done with DIPM enabled.
• Spinup current is measured from the time of power-on to the time that the drive spindle reaches operating
speed.
• Read/Write current is measured with the heads on track, based on three 64 sector read or write operations
every 100 ms.
• The drive supports three idle modes: Performance Idle mode, Active Idle mode and Low Power Idle mode.
Refer to Section 2.7.4 for power-management modes.
2.7.2 Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt
line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected
noise at up to 10MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected
noise at up to 10MHz.
Table 3 DC power requirements for 8TB and 6TB models
Power dissipation Avg (watts 25° C) Avg 5V typ amps Avg 12V typ amps
Spinup — — 2.0
Idle, Low Power 3.4 0.10 0.242
Read/Write 5.3 0.28 0.325
Standby 0.25 0.04 0.004
Sleep 0.25 0.04 0.004
Table 4 DC power requirements for 4TB, 3TB and 2TB models
Power dissipation Avg (watts 25° C) Avg 5V typ amps Avg 12V typ amps
Spinup — — 2.0
Idle, Low Power 2.5 0.12 0.15
Read/Write 3.7 0.28 0.191
Standby 0.25 0.04 0.004
Sleep 0.25 0.04 0.004
Note
Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.