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 vol01 and the remote mirror bitmap volume is vol04.

1. Access nodeA as superuser.
2. Verify that the cluster is in logging mode.

   Run the following command for Sun StorageTek Availability Suite software:

   nodeA# /usr/sbin/sndradm -P

   The output should resemble the following:

   /dev/vx/rdsk/devgrp/vol01 ->
   lhost-reprg-sec:/dev/vx/rdsk/devgrp/vol01
   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 Sun StorageTek Availability Suite software:

   nodeA# /usr/sbin/sndradm -n -m lhost-reprg-prim \
   /dev/vx/rdsk/devgrp/vol01 \
   /dev/vx/rdsk/devgrp/vol04 lhost-reprg-sec \
   /dev/vx/rdsk/devgrp/vol01 \
   /dev/vx/rdsk/devgrp/vol04 ip sync

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

   Run the following command for Sun StorageTek Availability Suite software:

   nodeA# /usr/sbin/sndradm -n -w lhost-reprg-prim \
   /dev/vx/rdsk/devgrp/vol01 \
   /dev/vx/rdsk/devgrp/vol04 lhost-reprg-sec \
   /dev/vx/rdsk/devgrp/vol01 \
   /dev/vx/rdsk/devgrp/vol04 ip sync

7. Confirm that the cluster is in replicating mode.

   Run the following command for Sun StorageTek Availability Suite software:

   nodeA# /usr/sbin/sndradm -P

   The output should resemble the following:

   /dev/vx/rdsk/devgrp/vol01 ->
   lhost-reprg-sec:/dev/vx/rdsk/devgrp/vol01
   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 Sun StorageTek Availability Suite software.

Next Steps

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