User manual

4.3 UDV Expansion
To expand UDV size, please follow the steps below.
1. Select “/ Volume confi g / User data volume”
2. Select the UDV to be expanded and click the “ ” button next to the number in the Size fi eld.
3. Change the volume size. The volume size must be larger than the original value. Then click
“
” to start expansion
4. Expansion starts. If UDV needs initialization, it will display an “I” in “Status 3” fi eld and the complete
percentage “R%”
Remind : The volume of UDV expansion must be larger than original value
Notice : UDV expansion cannot be executed during rebuilding or migration
4.4 Array roaming
Physical disks can be re-sequenced in the same system or be completely moved from system1 to
system2. This is called disk roaming. Disk roaming is restricted by the following conditions:
1. Check the fi rmware version of the two systems fi rst. It is better that both systems are using fi rmware
with the same or newer version.
2. The VG included in whole physical disks should be moved together. The architectures of the VG and
UDV will be kept but LUN architecture will be cleared to avoid confl ict with system2.
Figure 4.2.2
(Figure 4.2.2: A RAID 5 with 4 physical disks migrates to RAID 0 with 4 physical disks)
Figure 4.2.3
(Figure 4.2.3: A RAID 5 migrates to RAID 0, and the complete percentage is 1%)
Remind : To do migration/expansion, the total volume of VG must be larger or equal to the original VG. It does not allow the hard disks
with the same RAID level and the same original VG to expand.
When confi guring the migration, if the settings are incorrect, the system will pop up a warning window with the meanings
described as below:
"Invalid VG ID": Source VG error
"Degrade VG not allowed": Source VG is degraded
"Initializing/rebuilding operation's going": Source VG is initialing or rebuilding
"Migration operation's going": Source VG is doing migration
"Invalid VG raidcell parameter": Structural error. For example, the size of a new VG is smaller than that of the original VG
"Invalid PD capacity": The minimum PD size of a new VG is smaller than that of the original VG
Notice ; VG migration cannot be executed during data rebuilding or UDV expansion.
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