HP Storage Mirroring V5.1 Software - Manual (Page 187)

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Source
The Source tab contains settings specific to the source module of Storage Mirroring.

Replication Packets to 1 Mirror Packet—You can specify the ratio of replication packets to
mirror packets that are placed in the source queue. Specify a larger number if you have a busy
network that has heavy replication. Also, if you anticipate increased network activity during a
mirror or are in a low bandwidth environment, increase this number so that the replication queue
does not get too large.

Replicate NT Security by Name—Storage Mirroring allows you to replicate Windows permission
attributes by local name as well as security ID (SID). By replicating Windows security by name,
you can transmit the owner name with the file. If that user exists on the target, then the SID
associated with the user will be applied to the target file ownership. If that user does not exist on
the target, then the ownership will be unknown. By default, this option is disabled.

Domain security model—If you are using a Windows domain security model by assigning
users at the domain level, each user is assigned a security ID (SID) at the domain level. When
Storage Mirroring replicates a file to the target, the SID is also replicated. Since a user will
have the same SID on the source and target, the user will be able to access the file from the
target. Therefore, this option is not necessary.

Local security model—If you are using a Windows local security model by assigning users
at the local level (users that appear on multiple machine will each have different SIDs), you
will need to enable this feature so that users can access the data on the target. If you do not
enable this feature with a local security model, after a Storage Mirroring file and SID is
replicated, a local user will not be able to access the file because the user’s SID on the target
machine is different from the SID that was replicated from the source machine.
If you enable this option, make sure that the same groups and users exist on the target as
they do on the source. Additionally, you must enable this option on your target server before
starting a restoration, because the target is acting like a source during a restoration.
Enabling this option may have an impact on the rate at which Storage Mirroring can commit
data on the target. File security attributes are sent to the target during mirroring and
replication. The target must obtain the security ID (SID) for the users and groups that are
assigned permissions, which takes some time. If the users and groups are not on the target
server, the delay can be substantial. The performance impact enabling this option will have