IoSafe R4 User Manual download pdf (Page 46)

P/N: 900-10004-00 REV 02 USER GUIDE, IOSAFE R4

You can traverse a snapshot share just as you would a normal share except that the snapshot share is

read-only. If you wish, you can select a detailed listing to show the snapshot time in the description

field.

Snapshots can expire when the snapshot reserved space is filled. The snapshot mechanism keeps

track of data that has been changed from the original volume starting at the point when the snapshot

is taken. All these changes are kept in the snapshot reserved space on the volume. If you look at the

Disk space

utilization information just below the

Volume

tab, you will see how much space has

been reserved for snapshots.

After snapshot is taken, if changes on the volume exceed this reserved space, the snapshot is

invalidated and can no longer be used.

Note

Changes that occupy space in the snapshot reserved space include new file

creation, modifications, and deletions; for instance, any time you delete a

1MB file, the change caused by the deletion will use up 1MB of reserved

space.

When the snapshot does become invalidated, an email alert will be sent and the status will be

reflected in the Snapshot tab. The snapshot is no longer usable at this stage.

►

RESIZING SNAPSHOT SPACE

If you are constantly getting snapshot invalidation alerts, you may want to either increase the

frequency of the snapshot, or consider increasing the snapshot reserved space. To do this, or to

eliminate your existing snapshot space (thus increasing your usable volume space), you can specify

the desired snapshot space in the Snapshot Space box. Simply select a value from the selection box

and click

Save

. Your snapshot space will be limited to approximately 100GB.

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IoSafe R4 User Manual Page 46