click ““ to free disk.

1.Select “/ Volume config / Physical disk”.

2.Select the global spare disk by clicking the checkbox of the row, then

click “1.Select “/ Volume config / Cache volume”.“ 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 is associated with one specific CV (cache volume) to execute the data transaction. Each CV could have different cache memory size. If there is no special request in UDVs, it uses global cache volume. Or user can create a dedicated cache for indivifual UDV manually. Using dedicated cache volume, the performance would not be affected by the other UDV’s data access.

The total cache size depends on the RAM size and set all to global cache automatically. To create a dedicated cache volume, first step is to cut down global cache size for the dedicated cache volume. Please follow the procedures.

Step 1: Create dedicated cache volume.

Figure 3.6.7.9

1.Select “/ Volume config / Cache volume”.

2.If there is no free space for creating a new dedicated cache volume, cut down the global cache size first by clicking the blue square button

Manual background” in the size column. After resized, click “Manual background” to return to cache volume page.

3.Click “Manual background “ to enter the setup page.

- 54 -

Page 54
Image 54
APC SCSI-SATA II manual Select “/ Volume config / Physical disk”, click ““ to free disk Done, all volumes have been deleted