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112 System Setup Program
Another advantage of a RAID level 0 configuration is that it utilizes the full capacities of the drives. For
example, if you have two 100-GB drives installed, you have 200 GB on which to store data.
NOTICE: Because RAID level 0 configurations provide no data redundancy, if one drive fails, then the data on the
other drive is also inaccessible. Therefore, ensure that you perform regular backups when you use a RAID level 0
configuration.
RAID Level 1 Configuration
RAID level 1 uses a data-redundancy storage technique known as "mirroring." When data is written to
the primary drive, it is then duplicated, or mirrored, on the other drive. A RAID level 1 configuration
sacrifices high data-access rates for its data redundancy advantages.
hard drive 1
segment 1
segment 3
segment 5
hard drive 2
segment 2
segment 4
segment 6
serial ATA RAID
configured for
RAID level 0
hard drive 1
segment 1
segment 2
segment 3
hard drive 2
segment 4
segment 5
segment 6
segment 1 duplicated
segment 2 duplicated
segment 3 duplicated
segment 4 duplicated
segment 5 duplicated
segment 6 duplicated
serial ATA RAID
configured for
RAID level 1
book.book Page 112 Tuesday, February 13, 2007 1:50 PM