Users guide

341 Intel® RAID Software User Guide
Redundant
configuration
A virtual drive that has redundant data on drives in the drive group
can be used to rebuild a failed drive. The redundant data can be
parity data striped across multiple drives in a drive group, or it can
be a complete mirrored copy of the data stored on a second drive.
A redundant configuration protects the data in case a drive fails in
the configuration.
Relative state of charge Predicted remaining battery capacity expressed as a percentage of
Full Charge Capacity.
Remaining capacity The amount of remaining charge capacity of the battery as stated in
milliamp hours. This value represents the available capacity or
energy in the battery at any given time. The gas gauge adjusts this
value for charge, self-discharge, and leakage compensation factors.
Revertible hot spare When you use the Replace Member procedure, after data is copied
from a hot spare to a new drive, the hot spare reverts from a rebuild
drive to its original hot spare status.
Revision level A drive property that indicates the revision level of the drive’s
firmware.
Run time to empty Predicted remaining battery life at the present rate of discharge in
minutes.
S
SAS Acronym for Serial-Attached SCSI. SAS is a serial, point-to-point,
enterprise-level device interface that leverages the Small Computer
System Interface (SCSI) protocol set. The SAS interface provides
improved performance, simplified cabling, smaller connectors, lower
pin count, and lower power requirements when compared to parallel
SCSI.
SATA Acronym for Serial Advanced Technology Attachment. A physical
storage interface standard. SATA is a serial link that provides point-
to-point connections between devices. The thinner serial cables
allow for better airflow within the system and permit smaller chassis
designs.
SCSI device type A drive property indicating the type of the device, such as drive.
Serial no. A controller property indicating the manufacturer-assigned serial
number.
Strip size The portion of a stripe that resides on a single drive in the drive
group.
Stripe size A virtual drive property indicating the length of the interleaved data
segments that the RAID controller writes across multiple drives, not
including parity drives. For example, consider a stripe that contains
64 KB of drive space and has 16 KB of data residing on each drive
in the stripe. In this case, the stripe size is 64 KB and the strip size is
16 KB. The user can select the stripe size.