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### How to Perform a Remote Mirror Replication

In this procedure, the master volume of the primary disk is replicated to the master volume on the secondary disk. The master volume is `d200` and the remote mirror bitmap volume is `d203`.

1. Access `nodeA` as the `root` role.
2. Verify that the cluster is in logging mode.

   Run the following command for Availability Suite software:

       nodeA# /usr/sbin/sndradm -P

   The output should resemble the following:

       /dev/md/nfsset/rdsk/d200  ->
       lhost-reprg-sec:/dev/md/nfsset/rdsk/d200
       autosync: off, max q writes:4194304, max q fbas:16384, mode:sync,ctag:
       devgrp, state: logging

   In logging mode, the state is `logging`, and the active state of autosynchronization is `off`. When the data volume on the disk is written to, the bitmap file on the same disk is updated.

3. Flush all transactions.

       nodeA# lockfs -a -f

4. Repeat Step 1 through Step 3 on `nodeC`.
5. Copy the master volume of `nodeA` to the master volume of `nodeC`.

   Run the following command for Availability Suite software:

       nodeA# /usr/sbin/sndradm -n -m lhost-reprg-prim \
       /dev/md/nfsset/rdsk/d200 \
       /dev/md/nfsset/rdsk/d203 lhost-reprg-sec \
       /dev/md/nfsset/rdsk/d200 \
       /dev/md/nfsset/rdsk/d203 ip sync

6. Wait until the replication is complete and the volumes are synchronized.

   Run the following command for Availability Suite software:

       nodeA# /usr/sbin/sndradm -n -w lhost-reprg-prim \
       /dev/md/nfsset/rdsk/d200 \
       /dev/md/nfsset/rdsk/d203 lhost-reprg-sec \
       /dev/md/nfsset/rdsk/d200 \
       /dev/md/nfsset/rdsk/d203 ip sync

7. Confirm that the cluster is in replicating mode.

   Run the following command for Availability Suite software:

       nodeA# /usr/sbin/sndradm -P

   The output should resemble the following:

       /dev/md/nfsset/rdsk/d200 ->
       lhost-reprg-sec:/dev/md/nfsset/rdsk/d200
       autosync: on, max q writes:4194304, max q fbas:16384, mode:sync,ctag:
       devgrp, state: replicating

   In replicating mode, the state is `replicating`, and the active state of autosynchronization is `on`. When the primary volume is written to, the secondary volume is updated by Availability Suite software.

Next Steps

Go to How to Perform a Point-in-Time Snapshot.

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