HP Storage Mirroring Software - Manual (Page 517)

515 of 739
Target
Data State
at Failover
Description Advantages Disadvantages
Apply Data
in Target
Queues
Then
Failover
All of the data in the target queue will be
applied before failover begins.
All of the
data that the
target has
received will
be applied
before
failover
begins. Depending on
the amount of
data in queue,
the amount of
time to apply all
of the data
could be
lengthy.
Discard
Data in
Target
Queues
and
Failover
Immediately
All of the data in the target queue will be
discarded and failover will begin immediately.
Failover will
occur
immediately. Any data in the
target queue
will be lost.
Revert to
Last Good
Snapshot if
Target Data
is Bad
If the target data is in a bad Storage Mirroring
Recover state, Storage Mirroring Recover will
automatically revert to the last good Storage
Mirroring Recover snapshot before failover
begins. If the target data is in a good state,
Storage Mirroring Recover will not revert the
target data. Instead, Storage Mirroring Recover
will apply the data in the target queue and then
failover.
Good data
on the target
is
guaranteed
to be used.
If the target data
state is bad, you
will lose any
data between
the last good
snapshot and
the failure.