Correct use of snapshots

Hello

I would like to have comments about the correct way to use snapshots.

Currently, I have a server ESXi 3.5 with 4 virtual machines.

I use snapshots as follows:

-J' still have 1 snapshot taken for each virtual computer

-J' have regularly (before the size of the snapshot becomes too large) remove the snapshot and just after, take a new snapshot for each virtual machine

-I will soon be able to make a backup of my virtual machines, but I don't now

I recently started to monitor the size of my virtual machines, and they become several GB in just a few days.

I wonder if it is efficient to always have a snapshot on each virtual machine.

I'm starting to think maybe this snapshot should be taken just before to make a change on the server (installation of the software or other) to return to the State that we had before the operation, in the case where he's going poorly, then remove the snapshot after we have confirmed the operation went well, but should not exist at all times.

Your comments are welcome! Thank you!

Yann

The snapshots are NOT backup anyway. If you use instant as replacement of backup then

(1) you lose a costly storage space

(2) that you have less reliable

(3) you generate disk load high commit when snapshots

What is the correct use of the snasphots:

(1) you need to install a patch on your virtual machine

(2) take the snapshot

(3) install the patch

(4) monitor behaviour of the system in case of patch broke something for awhile

(5) commit instant if everything is ok, or go back to the snapshot if something bad happened.

---

MCSA, MCTS, VCP, VMware vExpert 2009

http://blog.vadmin.ru

Tags: VMware

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