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hyper-v and disks (raid or not?)

Hi, if i have one server with Windows 2012 R2 and Hyper-V role on it, should i use RAID controller on the disks where the hyper-v host disks are? I did read somewhere that the disk must be setup with write through, but could i then use the file and storage service and use JBOD instead and have the same speed? Since it cant use a raid controllers ram to speed up, then what is the point using a dedicatet raid controller?
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John Gobert
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Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
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But, you should not use jBOD. That isn't RAID and you don't get any redundancy with it. jBOD only presents your disks to the OS as a large single disk. You also don't get any speed advantage with it (as opposed to RAID 0 and also doesn't give any redundancy), as with jBOD the data isn't distributed on several disks, but rather the first disk gets filled, then the 2nd, then the next. It is a little safer to use than RAID 0 though, as if a disk fails, you only loose the data on the failed disk, and not also the data on the others like you would with RAID 0.
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dont seem to ve much info out there or not may that use 2012 R2. I ended up using windows 2012 R2 storage server and disks in jbod with virtual disks in mirroring and 10Gb card to Hyper-V server.