DPM 2010 - Bare Metal Recovery

Posted by David Thursday, April 15, 2010 2:15:00 PM
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For those of you who have used DPM 2007, you'll know that if you wanted to provide Bare Metal Recovery protection you had to install a second piece of software called the DPM System Recovery Tool (SRT).  This then meant you potentially needed more hardware and then you find that you could only protect Windows Server 2003.  Well things have now changed in DPM 2010, it is now integrated into the DPM product and you can provide BMR protection from within the same DPM console as you would protect anything else.

"Bare metal recovery is the process of rebuilding a computer after a catastrophic failure."

The quote above nicely describes what Bare Metal Recovery is.  After a catastrophic failure, you can use BMR to restore the system back to a previous state.  Where BMR is different from System State is that it protects pretty much everything everything whereas System State will only protect system specific data which includes the registry, COM+ class registration and boot and system files as well as the certificate and AD databases if applicable.  

So, back to DPM 2010 and BMR.  As I stated earlier, this is now much simpler in DPM 2010 as you can protect the system in just the same way as you provide any other protection.

Bare Metal Recovery

 

As you can see from the image above, just select Bare Metal Recovery under System Protection and away you go.  All other settings are the same as protecting any other data source.  Much easier than having to install a separate piece of software with a different console to provide this protection :-)

Next question then is, "well, how does it perform a bare metal backup?", and this is quite simple as it uses Windows Server Backup.  Windows Server 2008 Backup (and its command line interface wbadmin.exe) are the new block-level backup infrastructure built into Microsoft's latest operating systems.  This provides a block-level volume image based solution to providing system protection.  DPM 2010 will use Windows Server Backup to generate the backup file locally and then protect that file.  One thing to note here is that you will need sufficient space on the server to store the backup file; refer to my System State backup article for more details, http://www.scdpmonline.org/server-2008-system-state-backup.aspx.  The biggest limitation of DPM using Windows Server 2008 Backup is that you can only perform a bare metal backup on servers with Windows Server Backup installed, ie Windows Server 2008+.

This is another one of the many improvements in DPM 2010 !

 
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David Allen
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re: DPM 2010 - Bare Metal Recovery

Thursday, April 29, 2010 10:46:50 PM MJLongman

"...you will need sufficient space on the server to store the backup file..."

Which server are you referring to: the protected server or the DPM server?  Because Windows Server 2008 R2 can store its image-based backup in a number of locations, but Windows Server 2008 can only store its backup on a local, dedicated drive, so that's why I'm confused. 

And if you have a BMR backup do you need to backup anything else on the server?  That is, can you restore the BMR backup to a different location, use Disk Management to mount the VHD and just pull data out of that file?  I just don't want to double my storage needs without any gain. 

Lastly, how would you recover in the event of a server crash.  If the BMR backup is based on a Windows Server Backup can you just boot the server off of the Windows DVD and browse to the DPM server? 

Sorry for all the questions and thank you in advance! 

re: DPM 2010 - Bare Metal Recovery

Friday, April 30, 2010 9:06:16 AM Nascholing

Thanx for your article about BMR in DPM 2010.

Just as MJLongman asked am i curious about the real content of a BMR-backup (does it contain ALL the volumes and partitions, or does it 'image' the C:-partition?)

To MJLongman:

Mike Resseler (of Ferranti and scug.be) pointed out to me you can use the Windows Server DVD to boot (a fresh formatted (virtual) machine and instead of pressing 'Install' you can click 'Repair my computer'. It then wants to recover from a backup on a local drive, but if you press 'Cancel' you can point it to a shared folder (where you had DPM recover the BMR-backup).  Very nice n tidy :-)

Regards and good luck for you, and a thank you to M. Resseler.

re: DPM 2010 - Bare Metal Recovery

Friday, April 30, 2010 3:17:44 PM MJLongman

Thanks Nascholing, that's a great tip!  And I, too, am curious about the contents of the BMR file.  I suppose it'd be fine if if just imaged the C: partition since it's easy enough to restore data on non-boot drives, but it'd also be an extra step.  If I can find some time in the coming weeks I'll see if I can test this out. 

re: DPM 2010 - Bare Metal Recovery

Friday, April 30, 2010 4:35:02 PM David

Hi there...

If you were performing a system state backup, you would need sufficient space on the server being protected to store the backup file.  Performing BMR protection though can stream the data directly to the DPM server so the space is required on the DPM server and not on the server being protected.  By default DPM reserves 30GB of space on the replica volume for this.

Also, BMR protection covers protection for operating system files and critical volumes (excluding user data).

Hope this is clearer and thanks for posting the additional info from Mike, he is a wealth of information :-)

David

re: DPM 2010 - Bare Metal Recovery

Friday, April 30, 2010 4:53:19 PM David

Microsoft have also released their documentation on System Protection which you might find helpful... http://technet.microsoft.com/en-us/library/ff634208.aspx.

re: DPM 2010 - Bare Metal Recovery

Friday, June 25, 2010 7:25:49 PM MJLongman

Hi all,

I did some testing with DPM 2010's BMR capabilities and documented my results at: http://www.interdynbmi.com/files/JuneBlogPost_BareMetalRecovery_000.pdf

Let me know what you think, thanks.   

re: DPM 2010 - Bare Metal Recovery

Wednesday, October 13, 2010 1:28:10 PM Preisser Günter

is it possibel to make a Bare Metall Recovery of an SQL Server ???

i dont get an konsitent Status when i try to make Bare Metal and System state of an SQL Server.

Can someone help me ?

i tried to stop the services from SQL, but this doesnt help

king regards

re: DPM 2010 - Bare Metal Recovery

Wednesday, October 13, 2010 1:32:15 PM David

Hello,

Please post this question in the forums for the best feedback :-)

http://www.scdpmonline.org/forum.aspx

Thanks,

David



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