HP StorageWorks Storage Mirroring user's guide (T2558-96073, February 2008)
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Ignore Delete Operations—This option allows you to keep files on the target machine after they are deleted on the
source. When a file is deleted on the source, that delete operation is not sent to the target. (All edits to files on the
source are still replicated to the target; only deletions of whole files are ignored.) This option may be useful to give you
an opportunity to make a backup of these files in the event they are needed in the future.
Maximum Pending Mirror Operations—This option is the maximum number of mirror operations that are queued
on the source. The default setting is
1000. If, during mirroring, the mirror queued statistic regularly shows low numbers,
for example, less than 50, this value can be increased to allow Storage Mirroring to queue more data for transfer.
Size of Mirror Packets—This option determins the size of the mirror packets that Storage Mirroring transmits. The
default setting is
32768 bytes.
Block Checksum All Files on a Difference Mirror—This option allows a file difference mirror to check each block of
data, regardless of the file attributes. If this option is not marked, Storage Mirroring will assume files are synchronized if
their attributes match.
NOTE: If a file is deleted using Windows Explorer or My Computer, the file is not actually deleted, from the file
system perspective, but is moved to the Recycle Bin. Because Storage Mirroring sees this as a move to
outside of the replication set and not as a delete, the file will still be deleted from the target even if you
have
Ignore Delete Operations selected.
If delete operations are ignored long enough, the potential exists for the target to run out of space. In that
case, you can manually delete files from the target to free space.
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 All option to ensure proper file
comparisons.