User manual

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Multiple snapshots can only be taken on block-based LUNs, and only one snapshot can

be taken for file-based LUNs if you use the LUN Backup feature.

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Application consistent snapshots for iSCSI LUN are only available when the Snapshot

Agent is used and for VMware and VSS-aware applications running on a Windows

server.

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Snapshots and related features are currently only available for the following NAS

series: x51*, x53, x63, x70, x71, x79, x80.

* A minimum of 4 GB RAM is required to use snapshots.

* x51 series models only support up to 256 snapshots instead of 1024. The HS-251

does not support snapshots.

Taking a Snapshot

After reserved space is set, you can take snapshots. To create a snapshot, follow these steps:

1. Select a LUN from the list and click "Snapshot" > "Take a Snapshot".

2. Specify the snapshot name and duration to retain the snapshot.

3. Select between Crash-consistent or application-consistent snapshot types.

4. Click "OK".

Managing Snapshots

You can revert, delete, and clone a snapshot, set up snapshot schedules, or restore snapshot files for

LUNs or volumes. For more information on these functions, see Managing Snapshots with Snapshot

Manager for volumes and LUNs.

Snapshot Agent

QNAP Snapshot Agent supports VMware vCenter and Microsoft Volume Shadow Copy Service (VSS).

Before taking snapshots from the NAS, the Snapshot Agent notifies vCenter or Microsoft Server to

create VMware snapshots for each virtual machine and store those VMware snapshots to iSCSI LUNs

(or to flush all the data into the iSCSI LUN,) thereby ensuring application consistent snapshots.

To check connected servers with Snapshot Agent installed, click "Snapshot" > "SnapAgent". On the

SnapAgent page, you can check the agent IP, agent version, OS, LUN information, and status. Check