Upgrading disk capacity by cloning RRS feed

  • Question

  • I am planning to upgrade two 2TB drives that are currently in use by DPM, to 3TB drives.  How do I accomplish this peacefully ?  

    (A) I do have one spare port, so that I can temporarily install one 3TB, transfer data over, and remove one 2TB, and repeat this for the other one. But what's the right procedure to do that?

    (B) Or could it be done as easy as just clone the disks on another computer to 3TB drives,  and replace them ??  Would DPM be smart enough to treat them as same disk with increased storage space ?

    Tuesday, January 8, 2013 6:52 PM


  • Hi,

    This could be a tough one, it depends if all the data sources on one of the 2TB disks can be migrated to the 3TB disk.

    This script will help you determine how much space is required to migrate a "single" disk.

    Since some disks may hold one or more parts of the same datasource, the space required to migrate the whole data source is counted on each member disk, so that is why it's only useful for calculating a singe disk migration. 

    If EITHER Disk shows that it can be migrated to a single 3TB disk, then that is the answer.  Migrate that disk using MigrateDatasourceDataFromDPM.ps1, then wait for the RP's to expire and take that drive out, then migrate the other disk to another new 3TB disk.

    Using MigrateDatasourceDataFromDPM: 

    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Regards, Mike J. [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights.

    Monday, January 14, 2013 8:29 PM