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cpatte7372
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VMware Thin vs Lazy Thick vs Eager Thick disk

Hello Experts,

Can someone please tell me the difference between Thin vs Lazy Thick vs Eager Thick disk and which provides the best performance?

Cheers
VMware

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cpatte7372

8/22/2022 - Mon
Bud Durland

The answer to your question(s)  is probably here:
http://blogs.vmware.com/vsphere/2012/03/thin-provisioning-whats-the-scoop.html
Neil Russell

In short....
This is the worst performance and Eager thick is the best at the other extreme.  We use NOTHING except Eager Thick at all.  Performance testing has proven over and over that is is the best.
compdigit44

One point I would like to add on is to check with your SAN vendor to see what they recommend since some / most SAN vendor have API's that hook into Vmware via the VAAI
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William Peck
Neil Russell

And some also recommend disable VAAI as it causes worse performance in SOME configurations.

As always there is NO 100% correct answer.
compdigit44

What type of SAN or shared storage  device are you using???
cpatte7372

ASKER
Hello Experts,

Thanks for you're response, however I don't think any expert has actually answered my question...
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Qlemo

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cpatte7372

ASKER
Qlemo,

That's exactly the answer a novice like me needed.

Thanks
cpatte7372

ASKER
Cheers