How To Get DPM/Azure Backup Server To Use USB Drive As Backup Storage

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If you are running a demo or test lab, and you need some additional economical storage for backups, then you might think “I’ll use a USB drive”. However, DPM (and therefore Azure Backup Server) do not support adding a disk on a USB controller as a backup target. I struggled with this, and then it hit me this morning.

Storage Spaces will abstract that the disk is connected via USB Smile

I connected the disk, made sure it was unformatted and offline, launched Server Manger and created a pool from the primordial pool. I then create a simple virtual disk from the pool, and chose not to format it. Back into Azure Backup Server, and I was able to add the disk as a backup target.

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3 Comments on How To Get DPM/Azure Backup Server To Use USB Drive As Backup Storage

  1. Creating a VHDX on USB drive and mounting it should also work. I think it was Ben Armstrong who wrote about this workaround, in his case to get dedup working on removable media.

  2. Presenting it through iSCSI works as well. Sure it’s slow but it does indeed work

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