In this post, I just wanted to provide some reference posts. I have also added my latest and quick notes on SCCM High Availability, Redundancy, and Disaster Recovery.There are loads improvements in SCCM CB in terms of HA (High Availability), Redundancy and Disaster Recovery.
SCCM CB High-Availability (Quick Note)
- Install 2 MPs instead of 1 MP
- Install 2 Dps instead of 1 DP
- Install 2 SUPs instead of 1 SUP
- Use SQL DB cluster
- All site server components can be offloaded to separate server for high availability
- Primary server high availability options are still not there in SCCM production version. But Primary server DR/HA options are available for SCCM CB technical preview versions.
Excellent post on HA from Peter Daalmans :: High availability options in ConfigMgr 2012
High Availability related post by MadOne45 – He talks about multiple improvements in CM2012 like we can have multiple SMS Providers, Management Points, SQL clustering etc…. More details in the following link.
You can see useful thoughts on Redundancy by Brian Mason in the following link. He talks about the real world experience, how to reduce the impact by spitting the site server roles? etc…. Note : See the comments part for more details ……
1. Can you now restore the DB to a server with a different name in a DR situation?
ANS – No, you cannot restore your site database to a different server, but you can move the database to a different server after the recovery is finished. The ability to restore to a different SQL Server/instance is on our list to investigate for a future release, but no committed plans at this point.
2. What significant changes are there in DR from 2007 – 2012
There are many changes, so I encourage you to go read through the documentation. Some notable changes are as follows:
- There is no longer a separate repair wizard that you have to run after running Setup to reinstall the site. Instead, recovery is an option integrated into Setup.
- You now have the ability to recover data from another site in your hierarchy if you don’t have a good backup (doesn’t apply to a stand-alone primary environment).
- Backup still backs up some registry keys and files (e.g. logs, inboxes), but recovery doesn’t use anything other than the database.
- Status messages for backup failure have been improved, including in-console alerts when your backup fails.
3. What is the best high availability solution?
That’s a loaded question. What’s best depends on your specific environment, budget, and business requirements. Again, I encourage you to go read the documentation on this. A couple things that have changed from ConfigMgr 2007 are as follows:
- We no longer support NLB for management points. Instead, we allow you to simply deploy multiple MP’s and we will automatically load-balance for you.
- We now allow you to install multiple SMS Provider roles per site (must be installed on separate servers).