SF HA/DR With VVR Testing While Primary is Active
Created: 21 Oct 2012 | Updated: 25 Oct 2012 | 3 comments
This issue has been solved. See solution.
I have a customer with SF HA/dr with VVR for Oracle (two servers in primary, one in secondary) on RHEL 5.
SF version is 5.1 SP1 RP2.
The customer would like to test DR site, without taking the primary site offline.
I cannot use Fire Drill due to various reasons.
What the customer would like is to dissconnect the network between sites, then bring the DR online, test the DB (connect an application to it) and then shut the DR site down and reconnect the replication lines.
All this should be done while the primary site is active.
From what I understand, as soon as I disconnect the line between the sites, I have to run a takeover on the DR site to enable data access and mount the volumes, but this will result in an primary-primary configuration error once I'll reconnect the sites.
Usually this is resolved by taking the original primary (now acting secondary) and forcing it to be a secondary, but I obviously cannot do that since the primary has to remain active at all times and will be more updated when I'll finish testing the DR.
So, is there a way to perform this task without destroying all the configuration when done or without leaving the DR site as a primary?
Ideally, I would like to perform the following:
1. Disconnect the links (Planning to do so by taking IP resource offline)
2. Mount the volumes at the DR site
3. Start the DB at DR site and test it
4. Stop the DB and unmount volumes
5. reconnect the links and mark the DR site as secondary.
Help would be much appreciated.