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32906
April 29th, 2015 07:00
RDM migration from Dell Compellent SAN
Hello,
I have to do a filer migration from server 2003 to server 2008 R2.
But the problem is there are few RDMs are presented to the VM (Physical mode) from Dell Compellent SAN(6.3.5.7).So I am wondering how do I get this RDM migrated to the new server(2008 R2) without any issues.
I have heard that you can use storage replies to re-create the same RDM volumes,if its possible someone tell me how I can get the latest changes from the LIVE server to Test VM which is on the DR site.
We are doing an asynchronous replication of everything from Live Storage Center to the DR Storage Center.
any help would be appreciated.
thanks
Joh
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Dev Mgr
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9.3K Posts
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April 29th, 2015 23:00
You can unassign the RDM from the original VM and then assign it to the new VM in VMware.
All NTFS permissions will still be there. Any share definitions you can export from the registry on the 2003 system and then merge into the 2008 R2 VM's registry (assuming you make the drive letters match).
smith-100
3 Posts
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April 30th, 2015 06:00
How do I unassign the RDM from the VM?
I can only see the lun which is used for creating the .vmdk files not the RDM related info from VCI>VM's and Templates menu
Please can you give me a step by step process to unassign the RDM from the VM?
I got 4 RDM's connected to this VM.
Thanks
joh
SysAdminTX
13 Posts
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April 30th, 2015 06:00
These steps are based off of the vSphere client, not the web client (don't use that often enough to know the exact steps off my head, though they'll be similar).
- Shut down the original VM (2003)
- Right click the VM and go to edit settings
- identify the disk(s) that are the RDMs (probably not "hard disk 1")
- select the disk and click remove towards the top
- confirm by clicking OK
- edit settings on the new VM (2008 R2)
- click ADD along the top
- select to add a hard disk
- select the Raw Device Map option
- select the correct Compellent disk
- confirm with OK
- if the 2008 R2 VM isn't already (still) powered up, power it up now
- if the 2008 R2 VM is already/still running, go to disk management, select action and rescan
- assign/change the drive letter on the new disk to meet your needs
smith-100
3 Posts
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April 30th, 2015 08:00
If in case anything goes wrong, does it seamlessly connect the RDM back to the original VM(Server 2003).
Thanks.