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upgrade to server 2012 essential. How to move out System drive data.


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My 5 years old WHS V1 has a data drive failed (1 amount 12 2tb drives). which caused my Backup database repair failed and lost all my client machines backup. Other than the Backup Database, everything else including all my data seems fine after the failing HD replaced. So the only reason I still hold on to WHS V1 also dismissed as the only reason I hold on WHS V1 is the old Client Backups. 


Now I am preparing to upgrade this server to Server 2012 essential. I will use StableBit Drive Pool which let me to re-use my data drives without the need to copy the data and rebuild. http://wiki.covecube.com/StableBit_DrivePool_Q5463715.  Ihave total about 14 TB data spread over the 12 2TB drives. finding space to backup them and copy over after upgrade seems too much. 


For the other  11 Data drive seems straight forward to follow the stablebit's wiki. But how about the system drive? WHS V1 partition my 1st 2TB drive. 20 GB for the OS and rest into D drive.  How can I move all the data out from D: and dismissed the System drive from the Server Storage pool? I assume the system drive cannot do what the Stablebit wiki described. From Disk Management, it say my system drive have 147GB data. How can I identify and move out the 147 GB data so I can reinstall windows 2012 on this drive? 





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Unfortunately, because the Client Backup database is not duplicated .... which is frankly stupid, as it means that even a single disk failure will damage the database (due to lost files).


There is a registry hack to fix this "flaw" but Microsoft recommends against it ....




As for the system drive, the data is in "D:\DE".

If the system is still up and running, you can force migration of the data off of the system disk:



This may take a few hours to accomplish.  Otherwise, you can move/copy the data from the D:\DE drive to one of the other disks.

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