Vd Extension; Snapshot - D-Link DSN-6020 User Manual

5.3 VD extension

To extend VD size, please follow the procedures.
Select "/ Volume configuration / Virtual disk".
1.
Check the gray button next to the VD number; click "Extend".
2.
Change the size. The size must be larger than the original, and then click "OK" to
3.
start extension.
4. Extension starts. If VD needs initialization, it will display an "Initiating" in "Status"
and complete percentage of initialization in "R%".
Tips
The size of VD extension must be larger than original.
Caution
VD Extension cannot be executed during rebuilding or migration.

5.4 Snapshot

Snapshot-on-the-box captures the instant state of data in the target volume in a logical
sense. The underlying logic is Copy-on-Write -- moving out the data which would be
written to certain location where a write action occurs since the time of data capture. The
certain location, named as "Snap VD", is essentially a new VD which can be attached to a
LUN provisioned to a host as a disk like other ordinary VDs in the system. Rollback
restores the data back to the state of any time which was previously captured in case for
Figure 5.3.1
Figure 5.3.2
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