Chapter 6: Modifying Your Direct Attached Storage
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For each logical drive in your storage space, you can a set a timer to lower disk drive spin rate
(RPM), turn disk drives off, and check an inactive drive to verify its health.
Caution:
Adaptec does not recommend putting logical drives with common physical drives
under power management (although it is supported). Putting such drives under power
management may limit power savings in your storage space.
To configure power management for a logical drive:
1
In the Logical Devices View, select a logical drive.
2
In the menu bar, select
Actions
, click
Power settings
, then click
Set timers
.
The logical drive power timers window opens:
3
Select a value for each timer from the drop-down lists:
●
Slow down drives after
—Period of inactivity, from 3 minutes to 3 hours, after which
the drives’ spin rate is lowered. The default is Never.
Note:
For disk drives that do not support slow operation, set this timer to Never.
●
Power off drives after
—Period of inactivity, from 3 minutes to 3 hours, after which
the disk drives are turned off. The default is Never.
●
Verify drives after
—Period of inactivity, from 1 hour to 24 hours. after which an
inactive drive (a drive that’s already powered down) is restarted and checked to verify
its health. Once the check is completed, the drive is powered down and returns to its
inactive state. The default is Never.
4
Click
OK
.
Configuring Power Management for a Controller
The power management options for a controller affect all the logical drives on that controller.
You can choose a “stay awake” period during which time the disk drives on the controller
always spin at their peak rate. You can also set the spin-up limits for the controller—the
maximum number of drives that the controller may spin up at the same time.
Note:
The time you set for the stay awake period is relative to your local system time and time
zone. To set the time zone for power management, you
must
use the controller BIOS utility. The
time zone does not adjust automatically for daylight savings time. To compensate, you must adjust
the stay awake period manually, either in the BIOS or with Adaptec Storage Manager. For more
information, see the
Adaptec RAID Controller Installation and User’s Guide
.
To set the stay awake period for disk drives:
1
In the Enterprise View, select a controller.
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