VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Performance Monitoring and Tuning
Performance Guidelines
Chapter 12390
otherwise lightly-used disks in PL1, as opposed to the single disk in plex
PL2.(HotVol is an example of a mirrored-stripe volume in which one data
plex is striped and the other data plex is concatenated.)
Figure 12-2 Use of Mirroring and Striping for Improved Performance
NOTE To improve performance for read-intensive workloads, you can attach up
to 32 data plexes to the same volume. However, this would usually be an
ineffective use of disk space for the gain in read performance.
Disk 1 Disk 2 Disk 3 Disk 4
HotVol
PL1 SD1
HotVol
PL1 SD2
HotVol
PL1 SD3
Lightly
Used
Area
Lightly
Used
Area
Lightly
Used
Area
Lightly
Used
Area
HotVol
PL2 SD1