SnapShot Size

[BlackACE]

I have one virtual Machine (winXP) with Basedisk from 30 GB. In the OS is 9 GB free Space.

For long time make Snapshot ..and now ist the Snapshotsize equal the BaseDisk.

What happens when consolidate (delete) the Snapshot ?

[Pieter Du Preez]

Hi

Your "Snapdisk" can grow to the same size as your Base disk, so potentially if you create another snapshot, it can also grow to 30GB

From Snapshot manager, when you "Delete" a snapshot, it means commit the snap disk to the base disk.

The snap disk logs changes, so when you commit the snapshot, the changes will be written to the base disk.

This will take a long time to comit 30GB of changes, but when it is complete your base disk will still be 30GB in size and the Snap disk will be gone

Here is a nice explanation on Snaps http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1015180

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[BlackACE]

Ok .. this understand !

What is when i not delete the SnapShotDisk .... and the OperatingSystem grow again. Can the SnapshotDisk bigger else BasisDisk ? When i understand you right ...cant not bigger ..only same Size from BasisDisk. What happens when not delete ... the WinXP stop ?

[Pieter Du Preez]

Communty acted up.. deleted double post..

The Snapshot disk keeps block tracking changes, so it will not grow bigger and you VM will keep running

But as Troy suggested I would also shut the VM down if you want to commit the snapshot

Please award points for Helpful/correct answers :smileyhappy:

[BlackACE]

My last Questions was .... when i not delete the SnapShot from virtual Machine ... stop the VM ? (the GuestOS grow more in to the SnapShotDisk, more then 30GB)

[Troy_Clavell]

with that big of a snapshot, i would power off the guest.  Committing that big of a snapshot on a powered on VM may have adverse affects because of the amount of disk i/o.  As for snapshot size.  As stated the snapshot can ONLY grow as big as the base disk.