HP Xw6400 - Workstation - 4 GB RAM - RAID 5 Arrays

RAID 5 Arrays (Parity)
Data from each drive is
duplicated (in segments) on
the other drives in the array
• RAID 5 = parity
• Failed drive is rebuilt from parity data
• Very high read performance
• High system overhead for writes
• Requires minimum of three drives
• Summary
o Better performance than a single drive
o Inexpensive redundancy
Ph
y
sical Drives
Stri
p
1A
Parit
y
(
2B 2C
)
Stri
p
3A
Drive A
Drive B
Parit
y
(
3A 3C
)
Stri
p
2B
Parity (1A
Strip
Stri
p
2C
Stri
p
3C
Drive C
© 2006 Hewlett-Packard Development Company, L.P. The information contained
herein is subject to change without notice. The only warranties for HP products and
services are set forth in the express warranty statements accompanying such
products and services. Nothing herein should be construed as constituting an
additional warranty. HP shall not be liable for technical or editorial errors or
omissions contained herein.
439277-001, October 2006
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