Optimizations in protecting SQL databases with high churn by DPM

This article discusses two specific problems that you may encounter while protecting high churn databases using DPM. Both of these concern the amount of disk space used by the DPM log files in certain scenarios and how to you can mitigate the issues that can arise as a result. Issue 1: Incremental backup job triggered… Read more

Exchange 2010 can be protected by multiple DPM servers

I like to draw attention to something that may not be well known and surprise some old ‘die hard’ DPM’ers. You probably are familiar with the ‘rule’ that all protected hosts within a cluster must be protected by the same DPM server! This is does not apply to Exchange 2010 and is formally documented here:… Read more

Potential VM protection name confusion

Lets say you create virtual machine protection and current conditions allow “Backup Using Child Partition Snapshot\<VM>” or in short; ‘online’ protection. Then you change the VM configuration and introduce one of the conditions that prohibit online protection (see below and  http://technet.microsoft.com/en-us/library/ff399205.aspx).  At this point online  protection (as the data source name suggests) will no longer… Read more

How to use SAN recovery option and mapping data source volumes to Windows disks

Say you want to use the DPM “SAN recovery” option. This requires storage management steps for which it is useful to know which Windows disks (LUN’s) hold the associated DPM volumes for a given data source. First a generic recap of the potential ‘DPM SAN recovery’ advantages and steps; ‘SAN recovery’ is only beneficial when… Read more

Exchange 2010 clusters can be protected by multiple DPM servers

I like to draw attention to something that may not be well known and surprise some. You probably are familiar with the ‘rule’ that all protected hosts within a cluster must be protected by the same DPM server! This is does not apply to Exchange 2010 and is formally documented here: http://technet.microsoft.com/en-us/library/ff399324.aspx. You still get… Read more

Protect, Unprotect, Protect, Unprotect – Understanding how DPM 2010 retention works

UPDATE 11/20/2013: The script below has been updated to work with all current versions of DPM 2012. ===== With special thanks to Fahd Kamal for the backgrounder content. Imagine that you are experimenting with DPM 2010.  You protect some data, and then you remove that protection group.  Then, showing DPM to one of your friends,… Read more

About defining DPM protection from CLI

Those with interest in modifying and creating DPM protection from CLI probably appreciate this otherwise there is little sense in reading further I guess. Those that seek to save and recreate protection configurations are up for a task that proved to be a daunting one, you may want to look into a twin script called… Read more

Space needed to migrate a disk

The MigrateDatasourceDataFromDPM script can have many formats one of which is to migrate a source disk to a target disk or array of disks. How much space do you need to migrate? You need at least as much as the source disk size of course but what if 1 or more volumes span to another… Read more

Troubleshooting SharePoint recoveries for DPM

There are some common issues we run into when troubleshooting SharePoint recoveries and the video below covers how to diagnose common SharePoint DPM recoveries using the various logs that are available. The two areas of focus are insufficient space and incorrect templates related issues. The video covers using the MSDPMcurr.errlog, Traclogs, monitoring logs, and the… Read more

DPM 2010 Release Candidate webcast preview

Hopefully you have been enjoying the DPM 2010 beta since September, but we are almost finished with the Release Candidate and our last milestones towards delivery.  Please join us on January 14 at 9:00 AM Pacific US Time to see what is coming in the Release Candidate  We will demonstrate the pre-RC software that our… Read more