Gateway FX530 - RAID for Both: Performance and Security

CHAPTER 4: Advanced Hardware Setup
38
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Drawback
RAID 1 treats the entire array as a single drive
with the storage capacity of the smallest physical
drive in the array. So if you have two drives
(300 GB and 250 GB) in a RAID 1 array, your
computer only recognizes a single drive with
250 GB total capacity.
RAID for both: performance and security
RAID 5 uses striping (at the block level) with
on-the-fly error correction across all drives.
Because of this error correction, small file
read/write errors can be quickly and
automatically fixed without a significant drop in
system performance. RAID 5 offers good
performance and data redundancy. This array
preserves your files if a drive fails.
RAID 5 stripes both data and parity information
across multiple drives. Striping across drives
improves overall performance, and the parity
information provides data protection. Because
of the error-correction capabilities, if a drive fails,
the data can be quickly and automatically fixed.
A1
B1
CP
A2
BP
C1
AP
B2
C2
RAID 5
8511781.book Page 38 Tuesday, October 10, 2006 4:41 PM