RAID and Subsystem Architectures
RAID Configurations
RAID levels commonly used
Which RAID level should we choose for which application?
Application Recommendation Comments
Optimum READ/WRITE No protection – only
Performance and disk suitable for “temporary”
usage – but NO Data
RAID 0
program data – not for
Protection information storage
READ Performance and ity, can cope with a
Resilience
RAID 5
Par
single disk failure
READ Performance and
Resilience
RAID 6
Double parity, can cope
with 1 or 2 disk failures
Optimum READ/WRITE
RAID 0+1
Better WRITE
Performance and performance than RAID 5
Redundancy
RAID 1+0
or 6, but uses more disks