Why VM snapshots are affecting performance?

Posted by Samselvaprabu on Server Fault See other posts from Server Fault or by Samselvaprabu
Published on 2012-09-20T06:32:49Z Indexed on 2012/09/20 15:40 UTC
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Filed under:

Performance

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vmware-esxi

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virtual-machines

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Snapshot

I read in one of the VMware KB article says that snapshots will directly proportional to VM performance.

But my team keep asking me how snapshots can affect performance.

I would like to give them solid reason behind the statement that snapshots are performance killers.

Can any one explain a little bit theory behind why actually snapshots are affecting the performance? Is it just because Disk I/O rate of hard disk would be slow?

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