D-Link DSN-656 User Manual - Page 126

Delete Replication Task, Clone Transfers to Replication

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D-Link Document - User Manual  Snapshot Space: This setting is the ratio of the source virtual disk and snapshot space. If the ratio sets to 2, it means when the replication process is starting, the system will book the free RAID group space to set as the snapshot space which capacity is double the source virtual disk automatically. The options are 0.5 ~ 3.  Threshold: The setting will be effective after enabling schedule replication. The threshold will monitor the usage amount of the snapshot space. When the used snapshot space achieves the threshold, the system will take a snapshot and start the replication process automatically. The purpose of the threshold is to prevent incremental copy failure immediately when running out of snapshot space. For example, the default threshold is 50%. The system will check the snapshot space every hour. When the used snapshot space is over 50%, the system will start the replication job automatically and then continue monitoring the snapshot space. When the rest snapshot space has been used 50%, in other words, the total used snapshot space is around 75%, the system will start the replication task again.  Restart the task an hour later if failed: The setting will be effective after enabling schedule replication. When running out of the snapshot space, the virtual disk replication process will be stopped because there is no more available snapshot space. If this option is checked, the system will clear the snapshots of replication in order to release snapshot space automatically, and the replication task will be restarted after an hour. This task will start a full copy. CAUTION: The default snapshot space allocated by the system is two times the size of the source virtual disk. That is the best value of our suggestion. If the user sets the snapshot space manually and lower than the default value, the user should be aware that if the snapshot space is not enough, the replication task will fail. Delete Replication Task To delete the replication task, please follow the procedures. 1. Select the task in Replications tab, and then click ▼ -> Delete. 2. Click OK button to delete the replication task. Clone Transfers to Replication It is always a problem doing a full copy over LAN or WAN when the replication task is executed the first time. It may take days or weeks to replicate data from the source to target within limited network bandwidth. We provide two methods to help users shorten the time of executing a full copy. Copyright@2014 D-Link System, Inc. All Rights Reserved. 126

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D-Link Document – User Manual
Snapshot Space:
This setting is the ratio of the source virtual disk and snapshot space. If the
ratio sets to 2, it means when the replication process is starting, the system will book the
free RAID group space to set as the snapshot space which capacity is double the source
virtual disk automatically. The options are 0.5 ~ 3.
Threshold:
The setting will be effective after enabling schedule replication. The threshold
will monitor the usage amount of the snapshot space. When the used snapshot space
achieves the threshold, the system will take a snapshot and start the replication process
automatically. The purpose of the threshold is to prevent incremental copy failure
immediately when running out of snapshot space. For example, the default threshold is 50%.
The system will check the snapshot space every hour. When the used snapshot space is over
50%, the system will start the replication job automatically and then continue monitoring
the snapshot space. When the rest snapshot space has been used 50%, in other words, the
total used snapshot space is around 75%, the system will start the replication task again.
Restart the task an hour later if failed:
The setting will be effective after enabling schedule
replication. When running out of the snapshot space, the virtual disk replication process will
be stopped because there is no more available snapshot space. If this option is checked, the
system will clear the snapshots of replication in order to release snapshot space
automatically, and the replication task will be restarted after an hour. This task will start a
full copy.
CAUTION:
The default snapshot space allocated by the system is two times the size of
the source virtual disk. That is the best value of our suggestion. If the user
sets the snapshot space manually and lower than the default value, the user
should be aware that if the snapshot space is not enough, the replication task
will fail.
Delete Replication Task
To delete the replication task, please follow the procedures.
1.
Select the task in
Replications
tab, and then click
▼
-> Delete
.
2.
Click
OK
button to delete the replication task.
Clone Transfers to Replication
It is always a problem doing a full copy over LAN or WAN when the replication task is executed the
first time. It may take days or weeks to replicate data from the source to target within limited
network bandwidth. We provide two methods to help users shorten the time of executing a full
copy.
126
Copyright@2014 D-Link System, Inc. All Rights Reserved.