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How's different snapshot and snapclone?

nataris
Advisor

How's different snapshot and snapclone?

How's different snapshot and snapclone? and what does it mean "mirror copy"?

Anyone have any doc to explain about them?
3 REPLIES
IBaltay
Honored Contributor

Re: How's different snapshot and snapclone?

Hi,
here is the EVA Business Copy Admin guide with the needed explanations:
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01375088/c01375088.pdf
the pain is one part of the reality
Steven Clementi
Honored Contributor

Re: How's different snapshot and snapclone?

Snapshot = point in time representation of data (all the data is not copied, only the data that it changed after the snapshot is taken).

Snapclone = bit for bit copy of a virtual disk.

MirrorCopy = Ongoing local replication of a virtual disk, until it is broken at which point the "copy" becomes it's own virtual disk. (I could have this a little wrong in some ways. I don't do much with MirrorCopy, but will check tomorrow when I am on an EVA.)

Snapshot generally only takes up the necessary space to hold the "changed" data.

Snapclone will cost the full amount of storage as the original virtual disk.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
skris
Trusted Contributor

Re: How's different snapshot and snapclone?

Hi Nataris,
Our fellow ITRC'ans have already explained a lot. Just to add to that;

> Snapshot's are solely dependent on the Master volume. (if the Source volume fails you could not restore, no matter how many snapshots you have.

> Snapclones will be totally independent once the job is Complete. So even if the parent volume failed, you could have the volume available.