User manual

Tips
The action of deleting one VG will succeed only when all of the
related UDV(s) are empty in this VG. Otherwise, it will have an
error when deleting this VG.
Step 9: Free global spare disk.
To set global spare disks, please follow the procedures.
1. Select “/ Volume config / Physical disk”.
2. Select the global spare disk by clicking the checkbox of the row, then
click “
“ to free disk.
Step 10: Done, all volumes have been deleted.
• Example 2
Example 2 is to create two UDVs in one VG. One UDV shares global cache
volume, the other uses dedicated cache volume. First, dedicated cache volume
should be created; it can be used in creating UDV. The last, delete them.
Each UDV will be associated with one specific CV (cache volume) to execute the
data transaction. Each CV could own the different cache memory size. If there is
no special request in UDVs, it will use global cache volume. Or it can be created
a dedicated cache for indivifual UDV manually. Using dedicated cache volume,
the performance would not be affected when the other UDV is excuting data
access.
The total cache size will depends on the RAM size and set all to global cache. To
create a dedicated cache volume, first step is to cut down global cache size and
remain to dedicated. Please follow the procedures.
Step 1: Create dedicated cache volume.
Enhance technology UltraStor RS16
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