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 Post subject: Hyper-V disk types
PostPosted: Mon Aug 05, 2019 11:52 am 

Joined: Thu Apr 17, 2014 11:58 am
Posts: 14
I have an assumption here, just wanted to make sure it was correct prior to doing anything.

My assumption is that when I create a drive for a VM on Hyper-V that is hosted on a 3par, rather than dynamically expanding, I should make it a fixed size and allow the 3par to handle whether or not it is actually using the space. Is that correct?

Also, what's the downside to not doing this, just reduced performance?

Thanks,


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 Post subject: Re: Hyper-V disk types
PostPosted: Mon Aug 05, 2019 3:07 pm 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 917
Location: Europe
I'm not 100% sure about Hyper-V, but for Vmware the VM needs to be thin in Vmware for it to forward the unmap commands from the VMs. I would assume the same for Hyper-V (thin on thin) but not 100% sure.

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 Post subject: Re: Hyper-V disk types
PostPosted: Mon Aug 05, 2019 3:09 pm 

Joined: Thu Apr 17, 2014 11:58 am
Posts: 14
MammaGutt wrote:
I'm not 100% sure about Hyper-V, but for Vmware the VM needs to be thin in Vmware for it to forward the unmap commands from the VMs. I would assume the same for Hyper-V (thin on thin) but not 100% sure.


Okay, so in that case it would need to be a dynamic disk (which would be thin)?


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