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Momentus 5400.2 SATA Removable Drive Cartridge Product Manual, Rev. C
7
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.
• Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does
not execute a read or write operation. Servo electronics are active. Seek mode power is measured based on
three random seek operations every 100 msecs. This mode is not typical.
• Read/write power and current
Read/write power is measured with the heads on track, based on three 63 sector read or write operations
every 100 msecs.
• 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 power-down model
*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.
Power dissipation +5V input average (25° C)
Spinup 1.1 A
Seek 2.20 watts
Read 1.90 watts
Write 2.30 watts
Idle, performance mode* 1.70 watts
Idle, active* 0.99 watts
Idle, low power mode* 0.80 watts
Standby 0.28 watts
Sleep 0.28 watts