hyper-v cluster 2012R2

looking for some advice on hyper-v cluster 2012r2
in previous hyper-v clusters 2008R2
we would create CSV volumes for the VMs operating system and use pass-through disks for the VMs data drives, this worked nicely as we have many sql servers VMs  in out cluster and SQL each server has dedicated volumes for
--SQL data
--SQL Logs
--SQL Tempdb
--SQL Backups
we use Dells equallogic SANs and have one array configured in RAID 10 and 2 additional arrays in raid 50, we would place the sql logs and tempdb drives on the raid 10, and the sql data on the raid50. this also made for expanding volumes online, which is a requirement for us

in the new hyper-v 2012 R2 if we switch over to vhdx static disks (no pass-through)
what is the best way to maximize the raid 10 array as  we were doing before. Im reading that vhdx is preffered over pass-though

also how does it work, will we need to create massive CSV volumes to support all the operating systems for the VMs and data drives

we will be configuring a 8 node hyper-v cluster using windows2012R2
utilizing 4* equallogic's  PS 6200 15k sas drives (1 raid 10 + 3 raid 50)
plus 2* equallogic's PS 6200E 7200k sata drives (raid 6)

would appreciate some advice\expertise in 20012R2  on the above
also my storage pool has 2 types of storage > high speed and low speed, low speed is only used by a couple of the VMs within the cluster
porto111Asked:
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kevinhsiehCommented:
You pretty need much to do what you have been doing before, but create separate CSV volumes for the different RAID types that you are using. You would have at least one CSV for the 15K RAID 10, another CSV for the RAID 50, and a third CSV for the RAID 6. You also don't want to have volumes that are too large because of the overhead with snapshots and cloning. I try to keep my volumes under 1 TB.

Online expansion of VHDX is great! I used to map iSCSI volumes from inside the guest so that I could have online expansion under previous versions of Hyper-V.
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