we are running vSphere 5.5 with a small amount of hosts.
We have used the Thick Provision Lazy Zeroed format for virtual disks.
I think the format has a disadvantage, because if I create a virtual disk with this format and later my VM used e.g. the half of given disk space, it's a waste of datastore space.
Would it not be useful to create virtual disk with Thin Provision format ?
(all our datastores are local)
You can use thin provision.Only difference is thin provision uses the storage space on the fly.
Whereas thick will allocate the space in a single shot.
This link will guide you.
Only disadvantage of thin provision is if you have a scenario where the disk is constantly
growing in size. Whenever a thin provisioned disk is expanded in size on the fly you
will have a small performance penalty compared to the thick formats.
If you application is normally reusing already allocated diskspace and only somtimes
allocate new diskspace there is absoultely nothing wrong with thin.
That's right, only works converter or storage vmotion.
On the other hand, fromt thin to thick is more easy, you only need to power off the vm and inflate the vmdk needed.
Hope you have migrated to thin provision.
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