Monday, January 11, 2010

Fan of Deduplication!

It has been about 4 months now since we have implemented our new backup solution. I must say that I am a fan! Deduplication is eliminating the redundant data in a given set of data being backed up.  For instance, we have several VMs with Windows on them.  These VMs take up very little space because the Windows bits are only stored once.

We purchased from EMC their Avamar backup solution. We have two replicating nodes, one here in Chapel Hill and one at our data center at Peak10 in Charlotte. These nodes are currently backing up more than 2.7 TB of data and is only using about 1.5 TB of space.  Now you might say that “that's not that great”, but wait.  That includes 4 months of additions, changes and restore points. Our retention policy is fairly conservative and the backup times are amazing.

Avamar works seamlessly with our VMs, Exchange, SQL Server and our users directories.  Backing up in both locations, it gives us a very easy restore scenario. Also, one in which we had to act on just recently with our web server having issues.

I use Microsoft’s Windows Home Server at home which has its form of deduplication as well.  And if you read this blog from time to time you know what a fan of Windows Home Server I am.

Till next time…