User's Manual

116 Controllers
Manage Physical Disk Power
Does my controller support this feature? See Supported Features .
The Manage Physical Disk Power task allows to manage the power consumed
by the physical disks by spinning down the hotspares and unconfigured drives
if there is no I/O activity for a specified amount of time. This option is
supported with PERC H700, H800, and H310 cards. Additionally, Dell PERC
H810, H710, and H710P cards support power saving configurations on
unconfigured, Hot Spare, and configured disks.
Set Rebuild Rate
Does my controller support this feature? See Supported Features .
The Set Rebuild Rate task changes the controller’s rebuild rate.
During a rebuild, the complete contents of a physical disk are reconstructed.
The rebuild rate, configurable between 0% and 100%, represents the
percentage of the system resources dedicated to rebuilding failed physical
disks. At 0%, the rebuild has the lowest priority for the controller, takes the
most time to complete, and is the setting with the least impact to system
performance. A rebuild rate of 0% does not mean that the rebuild is stopped
or paused.
At 100%, the rebuild is the highest priority for the controller, minimizes the
rebuild time, and is the setting with the most impact to system performance.
On the PERC controllers, the controller firmware also uses the rebuild rate
setting to control the system resource allocation for the following tasks. For
these controllers, the rebuild rate setting applies to these tasks in the same
manner that it applies to the Rebuild task.
• Check Consistency
• Background Initialization (see Cancel Background Initialization)
• Full Initialization (A BIOS setting determines whether a full or fast
initialization occurs. See Format and Initialize; Slow and Fast Initialize.)
• Reconfigure (see Virtual Disk Task: Reconfigure (Step 1 of 3))