HP StorageWorks Storage Mirroring for Linux User's Guide (T2558-96317, June 2009)

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Scheduled verification
Verification can be scheduled to occur automatically at periodic intervals.
1. Right-click the connection on the right pane of the Management Console and select Connection
Manager.
2. Select the Verify tab.
3. Specify when you want to start the initial verification. Select the immediate date and time by
clicking Now, or enter a specific Date and Time. The down arrow next to Date displays a
calendar allowing easy selection of any date. Time is formatted for any AM or PM time.
4. Mark the Reverification Interval check box to repeat the verification process at the specified
interval. Specify an amount of time and choose minutes, hours, or days.
5. Select if you want to Remirror data to the target automatically. When enabled, Storage
Mirroring will verify the data, generate a verification log, and remirror to the target any files that
are different on the source. If disabled, Storage Mirroring will verify the data and generate a
verification log, but no files will be remirrored to the target.
6. If you are remirroring your files, you can specify Only send data if source’s date is newer
than the target’s date so that only files that are newer on the source than on the target are
remirrored.
7. Specify if you want the verification process to Use Checksum to send minimal blocks of data
to determine which blocks are different. If this option is enabled, only those blocks (not the
entire files) that are different will be identified in the log and/or remirrored to the target.
8. Click OK to save the settings.
NOTE: If you are using a database application, do not use the newer option unless you know
for certain you need it. With database applications, it is critical that all files, not just
some of them that might be newer, get mirrored.
NOTE: Database applications may update files without changing the date, time, or file size.
Therefore, if you are using database applications, you should use the block checksum
comparison to ensure proper verification and remirroring.