[one-users] persistent vs. non persistent

[Carlos Martín Sánchez]

Hi,

As you said, the main difference is that persistent Images will retain the
changes made when the VM is shutdown. Because of this, persistent Images
can only be used by one VM at a time, while non-persistent ones can be used
by several VMs.

A persistent Image will have a faster deploying time (prolog phase),
depending on your storage configuration [1]. For example, for the shared TM
the deployment will be immediate [2], whereas for the shared TM the
deployment time will be the same [3].

Regards

[1] http://opennebula.org/documentation:rel4.2:sm
[2]
http://opennebula.org/documentation:rel4.2:fs_ds#persistent_non_persistent_images
[3]
http://opennebula.org/documentation:rel4.2:fs_ds#persistent_non_persistent_images1

--
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September, 2013
--
Carlos Martín, MSc
Project Engineer
OpenNebula - The Open-source Solution for Data Center Virtualization
www.OpenNebula.org | cmartin at opennebula.org |
@OpenNebula<http://twitter.com/opennebula><cmartin at opennebula.org>


On Tue, Sep 3, 2013 at 10:04 AM, Kenneth <kenneth at apolloglobal.net> wrote:

> **
>
> What the difference between non persistent and persistent image?
>
> - are the changes not saved on a non persistent image?
>
> - is one faster than the other?
>
>
>
> --
> Thanks,
> Kenneth
>
>
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