Qsan XS5224D User Manual page 274

In general, local clone operates as follows:
1. Create a local clone task, 2 snapshots are taken on the Source Volume.
2. Data from the Source Snapshot T1 is copied to the Target Volume.
3. The Target Snapshot T1 is refreshed and becomes the common base.
4. Host keeps writing new data to the Source Volume.
5. At next synchronization, the Source Snapshot T2 is refreshed and copies only the
changes since the last synchronization.
6. The Target Snapshot T2 is refreshed and becomes the common base.
The local clone operations are under the Volumes function tab which provides to setup local
clone task, start or stop the tasks, setup local clone schedule, and delete tasks. The
maximum clone task quantity per volume is 1, and the maximum clone task quantity per
system is 64.
Table 12-3
Item
Maximum Clone Task Quantity per Volume
(Maximum Clone Pairs per Source Volume)
Maximum Clone Task Quantity per System
Rollback Local Clone
Rollback local clone operates are in the following:
1. After completing the local clone task, the data can be rolled-back.
2. Exchange the roles of source and target volume, follow the operations on local clone to
create a local clone task. Notice that the data in original volume will be destroyed. You
have to comprehensive consideration before doing.
3. Or create a new target volume to backup to.
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Local Clone Parameters
Value
1
64