sergeadam
Enthusiast
Enthusiast

Resize VMDK

I have a VM used as a file server. Because of the size of my datasets, it has 3 VMDKs created as a spanned volume inside Windows. The VMDKs have been created as 1.99TB.  It's been working fine. I just installed VEEAM B&R 6 and it refuses to back up those VMDKs because they're too large. I found that they should be 1.9TB.

How can I resize them without affecting the data inside Windows? I don't have the space to create a new 6TB disk.

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8 Replies
eeg3
Commander
Commander

I believe the limit you're seeing with Veeam isn't with Veeam but with Windows. If you convert your backup location's disk to GPT instead of MBR, you should be able to backup >2TB. The MBR limit is ~2TB.

Blog: http://blog.eeg3.net
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sergeadam
Enthusiast
Enthusiast

The spanned disk is GPT, every member disk is GPT as well. The limitation is VEEAM not being able to take a snapshot of the underlying VMDK if it's over 1.9TB.

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eeg3
Commander
Commander

Did Veeam Support tell you 1.9TB was the max? The only thing I've been able to find on their site in relation to that is this, which relates to VMFS3, I believe: http://www.veeam.com/KB1091

Blog: http://blog.eeg3.net
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sergeadam
Enthusiast
Enthusiast

No, but 1.99TB does not worj and 1.9TB does. It's likely somewhere in between, just easier to standardize at 1.9TB. 

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are you taking OS level backups or vmdk backups( image level backups)?

Regards, ABFS
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sergeadam
Enthusiast
Enthusiast

VMDK. I'm using VEEAM B&R 6. it can't create a snapshot because the VMDK is too large.

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a_p_
Leadership
Leadership

Unfortunately there's no way to shrink a virtual disk other than cloning it or migrating/copying the data to another disk.

Btw. the maximum virtual disk size - in order to be able to create snapshots - is 2,032GB (see "Calculating the overhead required by snapshot files" at http://kb.vmware.com/kb/1012384)

André

milton123
Hot Shot
Hot Shot

Here is a nice article please have a look..

http://jpaul.me/?tag=veeam&paged=5

Cheers, Yours Udin

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