Intel RS2BL080 ユーザーズマニュアル
RAID Functionality and Features
Intel® RAID Controller RS2BL080 Technical Product Specification
Revision 1.0
Intel order number E64388-001
26
4. RAID Functionality and Features
4.1 Hierarchy
The fundamental purpose of a RAID system is to present a usable data storage medium (virtual
drive) with some level of redundancy to a host operating system. The Intel
drive) with some level of redundancy to a host operating system. The Intel
®
RAID firmware is
based on the concept of associating physical drives in arrays and then creating a virtual drive
from that array that includes a functional RAID level. To create a virtual drive and present it to
the host operating system, the RAID firmware typically follows these steps:
from that array that includes a functional RAID level. To create a virtual drive and present it to
the host operating system, the RAID firmware typically follows these steps:
1. One or more physical drives are selected and associated as an array.
2. One or more arrays are associated and given a RAID level. This process creates a virtual
drive and provides an option to initialize the virtual drive.
3. The RAID firmware presents the virtual drive to the operating system.
4.1.1
RAID Physical Drive Status
Table 11. RAID Physical Drive Status
Drive State
Code
Description
Unconfigured
Good
Good
Unconfigured Good
The drive is functioning normally, but is not part of a configured virtual
drive and is not a hot spare.
drive and is not a hot spare.
Online
ONLN
The drive is online, is part of a configured virtual drive, and is functioning
normally.
normally.
Hot Spare
HOTSP
A physical drive that is configured as a hot spare.
Failed
FAILED
A physical drive that was originally configured as Online or Hot Spare, but
on which the firmware detects an unrecoverable error.
on which the firmware detects an unrecoverable error.
Rebuilding
REBUILD
A physical drive to which data is being written to restore full redundancy for
a virtual drive.
a virtual drive.
Unconfigured
Bad
Bad
Unconfigured Bad
A physical drive on which the firmware detects an unrecoverable error; the
physical drive was Unconfigured Good or the physical drive could not be
initialized.
physical drive was Unconfigured Good or the physical drive could not be
initialized.
Missing
Missing
A physical drive that was online, but which has been removed from its
location.
location.
Offline
Offline
A physical drive that is part of a virtual drive but which has invalid data as
far as the RAID configuration is concerned.
far as the RAID configuration is concerned.
None
None
A physical drive with an unsupported flag set. An Unconfigured Good or
Offline physical drive that has completed the ‘prepare for removal’
operation.
Offline physical drive that has completed the ‘prepare for removal’
operation.