Can I migrate two small DPM disks into one large one at one time?

Except the port used by OS drive, I have 4 more SATA ports in this server.   I had two 4TB drives before, they were almost full so I plan to migrate them to larger disks.   Assuming the 4TB disks are 4A and 4B. here was my plan:

(1)  Install a new 6TB drive (6A)
(2) Migrate from 4A to 6A
(3) Wait for retention period to pass, retire 4A
(4) Install the second new 6TB drive (6B)
(5) Migrate from 4B to 6B
(6) Wait for retention period to pass. retire 4B

 I used MigrateDatasourceDataFromDPM.ps1 to do the migration.  However something went wrong during step (2), the longest retention period in all of my protections is 10 days, but disk 4A has not been cleaned up after 90 days.  The even worse thing thing is, disk 4A is still being used for new protection groups that I creates !

So it ends up with:

port 1: 4A:  1.63 TB used, 2.06 TB Free (55% unallocated)
port 2: 4B: 2.65 TB used, 1.07 TB free  (28% unallocated)port 3: 6A: 4.87 TB used, 720GB free  (12% unallocated)
port 4: not used

As you can see, from all existing three disks I do not have space to entirely free up either disk 4A or 4B, I have to use the last available port to add in disk 6B.   But I want to make sure that I migrate both 4A and 4B to it (1.63TB + 2.65TB = 4.28 which it is capable of taking).  


Can I run
MigrateDatasourceDataFromDPM.ps1 from 4A to 6B and immediately again from 4B to 6B?  If not, how do I resolve this drama ?  Eventually I only want to leave disk 6A and 6B. 

March 17th, 2015 4:34pm

Jack,

I tried running the script against one of those two data sources remaining in the old disk, I have deleted all RP's, yet it did not disappear from the disk view. Then I tried to migrate again, and ran into the following error.  Basically it's the same as what I got before deleting the PR's.  

Let me say it this way --  I do not care losing the recovery points saved in this disk, I just don't want any poops  leftover if I forcely remove this disk.  Could you please kindly suggest the next step to clean this up?  Thank you. 

***********************************
Set-ProtectionGroup : D:\ has recently been migrated. You cannot migrate D:\ again
until the recovery points on the previous replica volume are available. (ID:
31224)
At D:\Program Files\Microsoft DPM\DPM\bin\MigrateDatasourceDataFromDPM.ps1:129
char:4
+             Set-ProtectionGroup $mpg
+             ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Set-DPMProtectionGroup], DlsE
   xception
    + FullyQualifiedErrorId : ChainedMigrationError,Microsoft.Internal.Enterpr
   iseStorage.Dls.UI.Cmdlet.ProtectionCmdLets.CommitProtectionGroup

***********************************


  • Edited by achen2002 14 hours 28 minutes ago
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March 18th, 2015 1:04pm

Hi,

Sorry, not knowing exactly what the problem is that's causing that error, I cannot help in a forum setting.


If you want to pursue this immediately, you can visit the following web site to open a support incident. The charge to your Credit Card will not be processed until your case is resolved and closed, if it's a code defect in the DPM then we wave all charges.

http://support.microsoft.com/select/Default.aspx?target=assistance

In the Quick product finder, enter:

System Center Data Protection Manager [2007 or 2010]
System Center 2012 then select System Center 2012 Data Protection Manager
System Center 2012 R2 then select System Center 2012 R2 Data Protection Manager

March 18th, 2015 2:38pm

Thank you Jack, I understand there might be problems that requires further troubleshooting.  But I am not sure if I wanted to spend $500 an incident and more time to "fix" this, since I am going to retire this disk anyway. 

I simply want to safely remove this old disk and pop in a larger one. Would it be a problem if I just do that ?

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March 18th, 2015 2:57pm

Hi,

I really cannot recommend any action since I don't know what DPM data is still remaining on the disk you want to remove.
March 18th, 2015 4:41pm

Jack,

I tried running the script against one of those two data sources remaining in the old disk, I have deleted all RP's, yet it did not disappear from the disk view. Then I tried to migrate again, and ran into the following error.  Basically it's the same as what I got before deleting the PR's.  

Let me say it this way --  I do not care losing the recovery points saved in this disk, I just don't want any poops  leftover if I forcely remove this disk.  Could you please kindly suggest the next step to clean this up?  Thank you. 

***********************************
Set-ProtectionGroup : D:\ has recently been migrated. You cannot migrate D:\ again
until the recovery points on the previous replica volume are available. (ID:
31224)
At D:\Program Files\Microsoft DPM\DPM\bin\MigrateDatasourceDataFromDPM.ps1:129
char:4
+             Set-ProtectionGroup $mpg
+             ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Set-DPMProtectionGroup], DlsE
   xception
    + FullyQualifiedErrorId : ChainedMigrationError,Microsoft.Internal.Enterpr
   iseStorage.Dls.UI.Cmdlet.ProtectionCmdLets.CommitProtectionGroup

***********************************


  • Edited by achen2002 Wednesday, March 18, 2015 5:07 PM
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March 18th, 2015 5:02pm

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