Users guide

335 Intel® RAID Software User Guide
Design voltage Designed voltage capacity of the battery, measured in millivolts
(mV).
Device chemistry Possible values are NiMH (nickel metal hydride) and LiON (lithium
ion).
Device ID A controller or drive property indicating the manufacturer-assigned
device ID.
Device port count A controller property indicating the number of ports on the controller.
Drive cache policy A virtual drive property indicating whether the virtual drive cache is
enabled, disabled, or unchanged from its previous setting.
Drive group A group of drives attached to a RAID controller on which one or
more virtual drives can be created. All virtual drives in the drive
group use all of the drives in the drive group.
Drive state A drive property indicating the status of the drive. A drive can be in
one of the following states:
• Unconfigured Good – A drive accessible to the RAID
controller but not configured as a part of a virtual drive or as a
hot spare.
• Hot Spare – A drive that is configured as a hot spare.
• Online – A drive that can be accessed by the RAID controller
and will be part of the virtual drive.
• Rebuild – A drive to which data is being written to restore full
redundancy for a virtual drive.
• Failed – A drive that was originally configured as Online or Hot
Spare, but on which the firmware detects an unrecoverable
error.
• Unconfigured Bad – A drive on which the firmware detects an
unrecoverable error; the drive was Unconfigured Good or the
drive could not be initialized.
• Missing – A drive that was Online, but which has been
removed from its location.
• Offline – A drive that is part of a virtual drive but which has
invalid data as far as the RAID configuration is concerned.
• None – A drive with an unsupported flag set. An Unconfigured
Good or Offline drive that has completed the prepare for
removal operation.
Drive state drive
subsystem
A collection of drives and the hardware that controls them and
connects them to one or more controllers. The hardware can include
an intelligent controller, or the drives can attach directly to a system
I/O bus controller.
Drive type A drive property indicating the characteristics of the drive.
E
EKM External Key Management
Estimated time to
recharge
Estimated time necessary to complete recharge of the battery at the
current charge rate.
Expected margin of
error
Indicates how accurate the reported battery capacity is in terms of
percentage.