Dell PowerEdge RAID Controller S110 - Manual (Page 11)

Features 9
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Features
The features of the Dell PowerEdge PERC S110 RAID Controller are
described in this section.
NOTE: Background Array Scan (BAS), Background virtual disk initialization (BGI),
Consistency check (CC), and Online Capacity Expansion/Reconfigure
(OCE/Reconfigure) run only on the operating system.
Automatic Virtual Disk Rebuild
Rebuilds a redundant virtual disk automatically when a failure is detected, if a
hot spare is assigned for this capability.
Background Array Scan (BAS)
Verifies and corrects correctable media errors on mirror, volume, or parity data
for virtual disks. BAS starts automatically after a Virtual Disk is created while
in the OS.
Background Virtual Disk Initialization (BGI)
The background initialization of a redundant virtual disk creates the parity
data that allows the virtual disk to maintain its redundant data and survive a
physical disk failure.
Since background initialization helps the controller to identify and correct
problems that might occur with the redundant data at a later time,
background initialization is similar to a consistency check.
Background initialization allows a redundant virtual disk to be used
immediately. Data is lost if a physical disk fails before the completion of a
BGI.
NOTE: Although a BGI is software-initiated at the PERC S110 BIOS Configuration
Utility, the PERC S110 adapter drivers must be loaded before the BGI runs.
Boot Support for RAID Levels
This feature allows boot support for volume, RAID 0, RAID 1, RAID 5, and
RAID 10.
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