Dell XPS 630i (Early 2008) - Manual (Page 67)

About RAID Configurations
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About RAID Configurations
NOTICE:
In order to use the migrating option to convert a RAID configuration
without losing data, your hard drive must initially be set up as a single drive RAID 0
array before the operating system is loaded onto the drive (see "Using the Nvidia
MediaShield ROM Utility" on page 70 for instructions).
This section provides an overview of the RAID configuration you may have
selected when you purchased your computer. There are several RAID
configurations available in the computer industry for different types of uses.
Your computer supports RAID level 0 and RAID level 1. A RAID level 0
configuration is recommended for high-performance programs, while RAID
level 1 is recommended for users that desire a high level of data integrity.
NOTE:
RAID levels do not represent a hierarchy. A RAID level 1 configuration is not
inherently better or worse than a RAID level 0 configuration.
The drives in a RAID configuration should be the same size in order to ensure
that the larger drive does not contain unallocated (and therefore unusable) space.
RAID level 0 and RAID level 1 require a minimum of two drives.
RAID Level 0 Configuration
NOTICE:
Because a RAID level 0 configuration provides no data redundancy, a
failure of one drive results in the loss of all data. To protect your data when using a
RAID level 0 configuration, perform regular backups.
RAID level 0 uses a storage technique known as data striping to provide a
high data access rate. Data striping is a method of writing consecutive
segments, or stripes, of data sequentially across the physical drive(s) to create
a large virtual drive. Data striping allows one of the drives to read data while
the other drive is searching for and reading the next block.
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