VM host best disk config?

Soldato
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I'm getting a new server, well it's actually here and I'm wondering what the best way to configure the disks would be. It's got 8 300Mb 10K SAS disks connected to a hardware RAID controller.

Reading around I've sort of decided to create a RAID 1 pack of 2 disks for the OS and then use the remaining 6 disks as a RAID 10 pack. The query is and I've read conflicting reports, should I or do I need the separate RAID 1 pack for the OS or should I use all the disks in a RAID 10 pack then create a partition for the OS.

Some people reckon that keeping the OS on a separate pack is the way to go, others suggest that a single pack will allow you to make the most of the space and won't impact the VMs that are running on the host.
 
I'm going to put Server 2012 on, haven't decided if I should then go for Hyper-V or maybe VMWare workstation 9 as I already have a license for it.

I've created a RAID1 using 2 disks for the OS and then configured the remaining 6 disks as a RAID10 pack. I have a backup of the VMs so worst comes to the worst I can always reconfig the RAID if need be.
 
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