Seagate Medalist Pro 6530 Manual download pdf (Page 18)

All measurements were taken at the drive power connector. A true RMS

meter is used to measure all modes except Standby. A DMM is used for

Standby measurements.

1.11.1.1 Active mode

During the Active mode, the drive is involved in spinup, seeking or

read/write activities. The table on page 11 shows the typical power-con-

sumption rates for these activities.

•

Spinup.

The drive enters the Spinup mode from the Standby mode

and brings the spindle and discs up to operating speed. Power in this

mode is defined as the peak power after starting spinup.

•

Seek.

The drive enters the Seek mode from the Idle mode. The

read/write heads are moved to a specific location on the disc surface

in preparation for reading from or writing to the disc. Read/write

electronics are powered down but servo electronics are active. Typical

power is defined as the power average of executing random seeks

with a 2-revolution (22.2 msec) dwell between Seek commands.

•

Read/write.

Read/write mode is entered from Idle mode. Read/write

electronics are activated and the servo is on track. The drive reads

from or writes to the disc.

1.11.1.2 Idle mode

The Idle mode is entered 1 minute after the last disc I/O activity. The

motor is up to speed and the actuator is repositioned once every minute.

The drive enters Idle mode from either Active or Standby mode, when

the host issues an Idle command only.

1.11.1.3 Standby mode

The spindle is stopped, the heads are parked in the landing zone, the

actuator is latched and some of the drive electronics are powered down.

Note.

When recovering from Standby or Sleep mode, you must allow

the drive to post ready before reporting a timeout. The drive can

take up to 20 seconds to post ready. In a master and slave

configuration, the master can wait up to 31 seconds for the slave

to complete diagnostics before posting ready.

10 Medalist Pro 9140, 6530 and 4520 Product Manual, Rev. B

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Seagate Medalist Pro 6530 Manual Page 18