Table of Contents
Advertisement
EX800M
2.4.2
2.4.2.1
Operating Mode
Spinup Standard
Spinup Fast
Spinup Green
Operational Peak Current
Sequential Read
Sequential Write
Random Read/Write
Idle
1
When running at 3 Gb/s or as a single ported device, power will be lower than the value listed.
2
All values are typical (measured at 25°C) except where specified as maximum.
3
Default spinup mode when not otherwise overridden. Use the WDSpinUp utility to modify the
spinup mode for individual drives. Go to http://support.wdc.com, then click on "Downloads" and
the drive family name to download this utility.
2.4.2.1.1 Power Savings Modes
Idle_A
Idle_B
Idle_C
Standby_Y
Standby_Z
1
When running at 3 Gb/s or as a single ported device, power will be lower than the value listed.
2
All values are typical (measured at 25°C) except where specified as maximum.
2.4.3
This product is capable of supporting both legacy ATA Advanced Power Management (APM) mode
and the new more extensive Extended Power Conditions (EPC) standards. Unless otherwise specified,
the default disk drive is shipped with the legacy APM mode enabled, and the EPC modes can be
enabled via the Set Feature command (Feature '4A'h, Sub Command '04'h). These two power savings
implementations are exclusively used, and thus not simultaneously supported.
2.4.3.1
This drive supports the legacy ATA power management commands that lower the average power
consumption of the hard drives. For example, to take advantage of the lower power consumption
modes of the drive, an energy efficient host system could implement a power management scheme that
issues a Standby Immediate command when a host resident disk inactivity timer expires. The Standby
Immediate command causes the drive to spin down and enter a low-power mode. Subsequent disk
access commands would cause the drive to spin up and execute the new command. To avoid excessive
wear on the drive due to the starting and stopping of the HDA, set the host's disk inactivity timer to no
shorter than ten minutes.
2679-771339-A05
3-disk Platform
Mean Current Requirements and Power Dissipation
12 VDC
3
1.900A (max)
1.225A
2.500A (max)
1.600A
1.200A (max)
775 mA
1.850A (peak)
1.925 mA (max)
400 mA
400 mA
600 mA
390 mA
Mean Current
Mode
12 VDC
350 mA
320 mA
270 mA
150 mA
7 mA
Power Savings Modes
SATA Advanced Power Management
RELEASED 8/13/13
1, 2
Mean Current
5 VDC
625 mA (peak)
220 mA
625 mA (peak)
220 mA
625 mA (peak)
220 mA
825 mA (peak)
875 mA (max)
650 mA
575 mA
360 mA
350 mA
1
2
Mean Current
5 VDC
230 mA
220 mA
220 mA
220 mA
210 mA
Specifications
1, 2
Mean Power
-
-
-
8.1W
7.7W
9W
6.4W
2
2
Mean Power
DIPM Off
5.4W
4.9W
4.3W
2.9W
1.1W
9
Advertisement
Table of Contents
