User manual

Step 6 Detach LUN from UDV
Enter “/ Volume confi g / Logical unit”
Figure 3.5.7.7
1. Select LUNs by ticking the checkbox and then click “ ”.
A confi rmation window will pop up
2. Click “OK”
3. OK
Step 7 Delete UDV (User Data Volume).
To delete the UDV, please follow the steps below:
1. Select “/ Volume confi g / User data volume”
2. Select UDVs by ticking the checkbox
3. Click “ ” and a confi rmation window will pop up
4. Click “OK”
5. OK. A UDV has been deleted
Remind : When a UDV is deleted, the attached LUN(s) related to this UDV will also be detached automatically.
Step 8 Delete VG (Volume Group)
To delete the VG, please follow the steps below:
1. Select “/ Volume confi g / Volume group”
2. Select a VG by ticking the checkbox. Make sure that there is no UDV on this VG and the
UDV(s) on this VG have been deleted
3. Click “ ” and a confi rmation window will pop up
4. Click “OK”
5. OK. A VG has been deleted
Remind : The action of deleting a VG will be complete only when all of the related UDV(s) have been deleted in this VG. Otherwise,
error will occur when deleting this VG.
Step 9 Free global spare disk
To free global spare disks, please follow the steps below:
1. Select “/ Volume confi g / Physical disk”
2. Select the global spare disk by ticking the checkbox, then click “ ” to
free the disk(s)
Step 10 OK, all volumes have been deleted
• Example 2
Example 2 is to create two UDVs in one VG. One UDV shares global cache volume while the other uses
dedicated cache volume. First, a dedicated cache volume should be created; it will be useful in creating
UDV. The last step is to delete all of them.
Each UDV is associated with one specifi c CV (cache volume) to execute the data transmission. Each CV
could have different cache memory size. If there is no special request in UDVs, it will use global cache
volume. Or user can create a dedicated cache for individual UDV manually. Using dedicated cache
volume, the performance would not be affected by the data access of other UDVs.
The total cache size depends on the RAM size and all the size will be confi gured as global spare cache
automatically. To create a dedicated cache volume, the fi rst step is to cut down the global spare cache
size for the dedicated cache volume. Please follow the steps below:
Step 1 Create dedicated cache volume
1. Select “/ Volume confi g / Cache volume”
2. If there is no enough space for creating a new dedicated cache volume, cut down the global
spare cache size fi rst by clicking the blue button “ ” in the size fi eld. After re-allocation of
the volume size, click “ ” to return to cache volume page
3. Click “ ” to enter the confi gure page
4. Fill in the size and click “ ”
5. OK. A new dedicated cache volume has been created
Remind : The minimum size of global cache volume is 40MB. The minimum size of dedicated cache volume is 20MB.
48 User Interface Introduction User Interface Introduction 49