HP Storage Mirroring V5 Software - Manual (Page 16)

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7. A snapshot is an image of data taken at a single point in time. Snapshots allow you to view files
and folders as they existed at points of time in the past, so you can, for example, recover from
cases where corrupted source data was replicated to the source image on the target image
server. If desired, you can take periodic snapshots of the data on the target image server, thus
protecting your source images.

Enable scheduled snapshots—By default, periodic snapshots are disabled. If desired,
enable snapshots by selecting this option.
Because Server Image Copy uses the Microsoft Volume Shadow Copy service to create
snapshots, your target must be running Windows 2003 Service Pack 1 or later. If you are
using an earlier version of Windows, this option will not be available. Additionally, your
source and target must be using the NTFS file system. If you are using a FAT file system, the
FAT volumes will not be included in the snapshot set, and when the snapshots are reverted,
the FAT volume will not be time-consistent with the NTFS volumes.

Take snapshots on the following interval—By default, Server Image Copy will take a
snapshot of the target data every hour. If desired, increase or decrease the interval between
snapshots.

Begin immediately—If you want to start taking snapshots immediately after the Server
Image Copy job is established, select this option.

Begin at—If you want to start taking snapshots at a specific data and time, select this option
and specify the date and time parameters.
8. Click Next to continue.