Raid Level 1 Configuration; Troubleshooting Raid - Dell OptiPlex 330 User Manual

RAID Level 1 Configuration

RAID level 1 uses a data-redundancy storage technique known as mirroring to
enhance data integrity. When data is written to the primary drive, the data is
also duplicated, or mirrored, on the second drive in the configuration. A
RAID level 1 configuration sacrifices high data-access rates for its data
redundancy advantages.
hard drive 1
If a drive failure occurs, subsequent read and write operations are directed to
the surviving drive. A replacement drive can then be rebuilt using the data
from the surviving drive. Also, because data is duplicated on both drives, for
example, two 120-GB RAID level 1 drives collectively have a maximum of 120-
GB on which to store data.
NOTE:
In a RAID level 1 configuration, the size of the configuration is equal to the
size of the smallest drive in the configuration.

Troubleshooting RAID

You can use one of two methods to troubleshoot RAID hard drive volumes.
One method uses the Intel RAID Option ROM utility and can be performed
without an operating system present on the hard drive. The second method
uses the Intel Matrix Storage Manager, or Intel Matrix Storage Console, and
is performed after the operating system and the Intel Matrix Storage Console
96
System Setup
serial ATA RAID
configured for
RAID level 1
segment 1
segment 2
segment 3
segment 4
segment 5
segment 6
segment 1 duplicated
segment 2 duplicated
segment 3 duplicated
segment 4 duplicated
segment 5 duplicated
segment 6 duplicated
hard drive 2