Recreate datastore

Hi,
I am using ESXi 6.0, I have several datastores with vmfs3, and I need  to switch to vmfs5.
I use PowerVault MD3200 Dell storages.
I know that this process could be done  "on the fly", but I'd prefer to delete and re-create datastore.
How can I do this? Can I delete datastore directly from ESXi vSphere client, or through Dell MD3200's utility?
Thankyou very much
Armitage318Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
We would destroy and re-create.

things only come back to bite you later, when you upgrade.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
How can I do this? Can I delete datastore directly from ESXi vSphere client, or through Dell MD3200's utility?

It's done through the vSphere Client, select the datastore and right click DELETE

This will remove the VMFS3 partition, and it is recommended to delete rather than upgrade because an upgraded VMFS3 keeps the characteristics of the VMFS3 datastore e.g. block size.
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Armitage318Author Commented:
Hi,
thank you for your reply.
I am going to recreate one datastore (there are no VM on it, of course) but I noticed some folder on one datastore, eg. ".vSphere-HA", ".dvsData"
Will ESXi stop me if there is something in use (what?)?
Thank you
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, it will because it's in use!

You need to change the VMware HA datastores in use, e.g. Edit VMware HA settings (it will not affect HA or your VMs).

and sometimes, removing datastores are not easily removed as they should be!
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Armitage318Author Commented:
Hi, I forgot to mention that this is a cluster (with several hosts).
According to this:

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2004605

it seems that I need to remove every datastore (about 20) on  each host!
Is there a way to do this in a simplest way?
Thank you
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Script it, or just get on an manually do it.
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Armitage318Author Commented:
Honestly, what would you do in my place?
Delete and re-create, or just upgrade? I have enough space to free one datastore at time, if necessary (for better security)
thank you
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