If you drop it out of SRDF/A mode then it will no longer be consistent.  Acp_disk mode allows the array to accept data and destage to local disk prior to sending over the link.  When bandwidth is available it will then re-read from disk to cache to send over the link.  You could run the command to set the drop priority for that one SRDF/A group to be the first group dropped during the testing period.  You could also just take that one group out of SRDF/A mode for the testing, go into acp_disk, then reactivate SRDF/A let it catch up, enable consistency.
Hi All, We have 10 rdfg groups(rdfg/server) in a vmax for srdf/a.They are replicating from nj to ny now on one exchange server admins wants to run jetstress test(that means lot of io's) will it impact only one rdfg group to go down or all groups.  Thanks in advance.. 
SRDF/A