Delete a snapshot in ESXi 5 when data store is almost full

I'm very skiddish on use or deletion of snapshots after a disaster, I had with them last year. So, I thought I would get your recommendation before you continue.

I have a virtual machine running on the host with about 700 GB of total space on the data store. The virtual machine uses about 500GB and there is only a snapshot of the virtual machine. The virtual machine uses a disc thin provisioned. I received a warning that there is insufficient data on the space store and there are only about 120 GB left. Is it safe to remove the snapshot? Should we double the size of the virtual machine to "consolidate? The last time I did it with multiple snapshots and a lot less space, it's disaster.

Edit: Here's what's on the data store (for this virtual machine). There is an another VM on the same data store which shows it takes 40 GB of space.

ApolloVMonDatastore1.png

Here's what it says on the storage to Apollo (the virtual computer name) under summary in vSphere:

ApolloVMsummary.png

The basic disk can only 'baloon' upward only by the amount of data in the snapshot, which is 214 GB function provided screenshot and to be on the safe side, you have to assume that he will do. If you need to at least 214 (I'd Go 220) free on the data store for a safe removal-snapshot operation.

Worse: these 214 GBs are given new, added after the creation of the snap. You the kickoff of the removal process. Basic disk to grow per GB 214. Currently, it consumes 355 GB so it will grow up to 569GB. Only one time all the data of the snap is committed to basic disk, the snapshot will be deleted. This is why you need some 220 GB free and available on the data store to start the removal process.

Instant deletion on an engine out of VM might help a little, but looks like not as much as you want.

If you shut down the virtual, pagefile will be deleted which will free up to 4 GB.

Also if you delete a wink on the virtual machine performance, actually another cliché will be created to store the changes that VM is done during the delete operation. According to the rate of change of data within your VM and the time required for the delete operation, it will take little extra space on the data store as well. This need for extra space can be avoided by removing the snap while the VM is turned off.

However, in your case the virtual computer power on off won't help

Bottomline - if you can, find a way to get 220 + GB of free space on your data store before you delete the snapshot. Otherwise, the next option is VM migration to a different data store with storage vMotion (without interruption) and deletion of snapshots there (once again, potentially without interruption). A last - cloning in another data store that involves downtime.

And you cannot clone to USB.

Tags: VMware

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