User`s manual

Appendices
Figure C-5: RAID 3 Storage
C.7. RAID 5
RAID 5 implements multiple-block striping with distributed parity. This
RAID level offers the same redundancy available in RAID 3, though the
parity information is distributed across all disks in the array. Data and
relative parity are never stored on the same disk. In the event a disk fails,
original data can be reconstructed using the available parity information.
For small I/Os, as few as one disk may be activated for improved access
speed.
RAID 5 offers both increased data transfer rates when data is being accessed
in large chunks or sequentially and reduced total effective data access time
for multiple concurrent I/Os that do not span multiple drives.
Figure C-6: RAID 5 Storage
RAID Levels App-17