HP StorageWorks Storage Mirroring Recover User's Guide (T5437-96008, November 2009)

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work with the global checksum setting on the Source tab of the Server
Properties.
● Remirror on Auto-Reconnect—In certain circumstances, for example if the
disk-based queues on the source are exhausted, Storage Mirroring Recover
will automatically disconnect connections (called auto-disconnect) and then
automatically reconnect them (called auto-reconnect). In order to ensure data
integrity on the target, Storage Mirroring Recover will perform an automatic
mirror (called an auto-remirror) after an auto-reconnect. If you enable this
option, specify the type of auto-remirror that will be performed.
● File Differences with Checksum—Any file that is different on the
source and target based on date, time, and/or size is flagged as
different. The mirror then performs a checksum comparison on the
flagged files and only sends those blocks that are different.
● File Differences with no Checksum—Any file that is different on the
source and target based on date, time, and/or size is sent to the target.
● Send data only if Source is newer than Target—Only those files that
are newer on the source are sent to the target.
Note:
Stopping, starting, pausing, or resuming mirroring contains a comparison
of how the file difference mirror settings work together, as well as how they
work with the global checksum setting on the Source tab of the Server
Properties.
● Full—All files are sent to the target.
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 File Differences with checksum or Full option.
● Calculate Replication Set size on connection—Determines the size of the
replication set prior to starting the mirror. The mirroring status will update the
percentage complete if the replication set size is calculated.