HP Storage Mirroring Software - Manual (Page 624)

Recommended optimizations Page 623 of 677
SQL Service Principal Names (SPNs) during failover and failback. If you have to
use different accounts, Kerberos authentication will require the Service Principal
Names to be failed over. See the
technical support article 3084 for details on
failing over the Service Principal Names.
l
Use block checksum for all files during a difference mirror—Configure each
source for the block checksum all option. This setting is critical to ensure that block
checksum difference mirrors will disregard the file time stamp and size and always
perform a block checksum comparison of the files in the replication set. Since the
time stamps and sizes of database files do not change often, it is important that
block checksum comparisons be performed even if file time stamps and sizes on
the target match those on the source. This option is available through the
Server
Properties Source tab .