AWS Storage Gateway - Reducing the Amount of Billed Storage on a Volume; Creating a One-Time Snapshot; Editing a Snapshot Schedule

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AWS Storage Gateway User Guide

Reducing the Amount of Billed Storage on a Volume

4. For Actions, choose Attach volume.

5. In the Attach Volume dialog box, choose the gateway that you want to attach the volume to, and

then enter the iSCSI target that you want to connect the volume to.

If you are attaching a stored volume, enter its disk identiﬁer for Disk ID.

6. Choose Attach volume. If a volume that you attach has a lot of data on it, it transitions from

Detached to Attached if the AttachVolume operation succeeds.

7. In the Conﬁgure CHAP authentication wizard that appears, enter the Initiator name, Initiator secret,

and Target secret, and then choose Save. For more information about working with Challenge-

Handshake Authentication Protocol (CHAP) authentication, see Conﬁguring CHAP Authentication for

Your iSCSI Targets (p. 377).

Reducing the Amount of Billed Storage on a Volume

Deleting ﬁles from your ﬁle system doesn't necessarily delete data from the underlying block device or

reduce the amount of data stored on your volume. If you want to reduce the amount of billed storage

on your volume, we recommend overwriting your ﬁles with zeros to compress the storage to a negligible

amount of actual storage. AWS Storage Gateway charges for volume usage based on compressed

storage.

Note

If you use a delete tool that overwrites the data on your volume with random data, your usage

will not be reduced. This is because the random data is not compressible.

Creating a One-Time Snapshot

In addition to scheduled snapshots, for volume gateways you can take one-time, ad hoc snapshots. By

doing this, you can back up your storage volume immediately without waiting for the next scheduled

snapshot.

To take a one-time snapshot of your storage volume

1. Open the AWS Storage Gateway console at https://console.amazonaws.cn/storagegateway/home.

2. In the navigation pane, choose Volumes, and then choose the volume you want to create the

snapshot from.

3. On the Actions menu, choose Create snapshot.

4. In the Create snapshot dialog box, type the snapshot description, and then choose Create snapshot.

You can verify that the snapshot was created using the console.

Your snapshot is listed in the Snapshots in the same row as the volume.

Editing a Snapshot Schedule

For stored volumes, AWS Storage Gateway creates a default snapshot schedule of once a day.

Note

You can't remove the default snapshot schedule. Stored volumes require at least one snapshot

schedule. However, you can change a snapshot schedule by specifying either the time the

snapshot occurs each day or the frequency (every 1, 2, 4, 8, 12, or 24 hours), or both.

For cached volumes, AWS Storage Gateway doesn't create a default snapshot schedule. No default

schedule is created because your data is stored in Amazon S3, so you don't need snapshots or a snapshot

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