I am having a lot of trouble getting Hyperv Server 2012 with Storage Spaces and ReFS working reliably. (Or even finding anything with regards to best practices).
I have tried making the a giant 2TB (2 TB Enterprise Sata Drives - Mirror from storage spaces single volume.) ReFS partition with the intention of just using vhdx's on it but in this case then the pool starts offline every reboot.
I have also tried creating Volumes for each VM on the Storage space. Then off-lining them and adding them to hyperv. This seems to work pretty well as well but again has to be manually redone each reboot. I suspect there is some parameter I don't know that
I can add from powershell to make this possible. This breaks Centos 6 when used with a sparse volume.
I could potentially use standard Windows software raid but it has been implied to me that the self healing part of ReFS only works with Storage Spaces.
Single Box. (32GB ECC RAM / Xeon E3 1230v2 / Booting from USB / 2 Enterprise SATA 2TB Disks / 2 Intel Nics - 1 management the other for the VM's (Has the VM offload feature).
Dunno about sparse vs fixed vhdx's either.
It seems like they are fairly similar. (Tested under Centos because I know how to do it fairly easily under high load - if it is going to be ok upto a certain amount of disk capacity used then I will probably use it).
I really don't like the idea of running a VM with the disks passed through and then iscsi. (I know what can happen with ZFS even on Solaris when you need to use zdb I expect it to be even more difficult on Linux - Solaris isn't suitable because if you use
a partitioned disk (i.e to boot from) you lose the disk cache.)
I have fairly simple needs just trying to learn hyperv. (I know VMWARE and Xen reasonably well).
Right now I have a Single ReFS fixed volume taking up 75% of the pool and it seems to reboot and be mounted but I am convinced there must be something I am missing with regards to using a volume on the storage space as storage for a VM. (For some things like builds using a volume with raid0 like characteristics would be desirable for me).
Anything at all would be helpful there is lots of slides saying that what I am doing is a good idea but not anything that provides any detail about it.