QNAP QTS 4.5 Series, Руководство пользователя

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QTS starts taking snapshots according to the schedule.
Snapshot Management
Snapshot Retention Policy
The snapshot retention policy determines how long QTS keeps each snapshot of a volume or LUN before
deleting it. Each volume and LUN has its own individual snapshot retention policy.
Configuring a Snapshot Retention Policy
Important
After you create or modify a snapshot retention policy, QTS applies the new policy to
existing snapshots. If the new policy is more restrictive than the previous policy, for
example changing from
Keep for: 5 days
to
Keep for: 2 days
, then QTS deletes
existing snapshots to conform with the new policy.
1. Go to Storage & Snapshots > Storage > Storage/Snapshots .
2. Select a thick volume, thin volume, or LUN.
3. Click Snapshot and then select Snapshot Manager .
The Snapshot Manager window opens.
4. Click Schedule Snapshot .
The Snapshot Settings window opens.
5. Click Snapshot Retention .
6. Select a snapshot retention policy.
Snapshot Retention Policy UI Label Description
Time-based Keep for Keep each snapshot for the specified
length of time.
Fixed number Keep the specified number
of snapshots Keep a fixed maximum number of
snapshots on the NAS. After the
maximum number is reached, QTS
deletes the oldest snapshot when taking a
new snapshot.
QTS 4.5.x User Guide
Storage & Snapshots 249