ZyXEL NSA-2400 ユーザーガイド

Chapter 6 Protect Screens

NSA-2400 User’s Guide

Click the Purge Policy button in the 

 screen to define a rule for 

automatically deleting snapshots. 

Purge policies apply to all snapshots, unlike backup purge policies which apply only to 
specific backups.

Purge policies always run before new snapshots are taken.

Figure 45   Protect  > Snapshot > Create/Edit

The following table describes the labels in this screen.

 

Volume Selection

A snapshot must be on done on a complete volume, and not a single file 
or folder. If a file in a volume become infected or corrupted, you must 
revert the whole volume back to its status in a previous snapshot.

Take Snapshots of

When creating a new snapshot, onlyvolumes that are already created on 
the NSA are available.

Apply

Click this button to save your changes back to the NSA. 

Cancel

Click this button to begin configuring this screen afresh.

Table 32   Protect  > Snapshot > Create/Edit  (continued)

Table 33   Protect  > Snapshot > Create/Edit 

Purge Settings:

Purge settings are run each time a snapshot is scheduled.
•

Do Nothing (all snapshots will be invalid): No new snapshots can 
be taken until you manually delete old snapshots.

•

Delete Oldest Snapshot First: The oldest snapshot will be deleted 
each time a new snapshot is scheduled.

•

Delete Largest Snapshot First: The largest snapshot will be deleted 
each time a new snapshot is scheduled. As a snapshot is a file of 
changes since your previous snapshots, selecting this option may 
cause problems with rollback later.

Apply

Click this button to save your changes back to the NSA. 

Cancel

Click this button to begin configuring this screen afresh.