HP Storage Mirroring Software - Manual (Page 320)

Workload protection Page 319 of 677
10. Select the Mirror Properties tab and specify how you want to mirror the data.
l
Full Mirror—All files in the replication set will be sent from the source to the
target.
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File differences—Only those files that are different based size or date and
time will be sent from the source to the target.
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Send data only if Source is newer than Target—Only those files that
are newer on the source are sent to the target.
Note: If you are using a database application, do not use the newer
option unless you know for certain you need it. With database