HP StorageWorks HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide (AA-RV1HA-TE, March 2005)

Planning Storage Configurations
77HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide
Table 8 compares the different kinds of containers to help you determine which
ones satisfy your requirements.
For a comprehensive discussion of RAID, refer to The RAIDBOOK—A Source
Book for Disk Array Technology.
Table 8: Comparison of container types
Container
Name
Relative
Availability
Request Rate
(Read/Write)
I/O Per Second
Transfer Rate
(Read/Write)
MB
Per Second
Applications
Independent
disk drives
(JBOD)
Equal to
number of
JBOD disk
drives
Comparable to
single disk drive
Comparable to
single disk
drive
—
Stripeset
(RAID 0)
Proportionate
to number of
disk drives;
worse than
single disk
drive
Excellent if used
with large chunk
size
Excellent if
used with small
chunk size
High
performance
for non-critical
data
Mirrorset
(RAID1)
Excellent Good/Fair Good/Fair System drives;
critical files
RAIDset
(RAID 3/5)
Excellent Excellent/good Read: excellent
(if used with
small chunk
sizes)
Write: good (if
used with small
chunk sizes)
High request
rates,
read-intensive,
data lookup
Striped
Mirrorset
(RAID 0+1)
Excellent Excellent if used
with large chunk
size
Excellent if
used with small
chunk size
Any critical
response-time
application