We've always had performance issues with our Xenserver 5.6 and ive asked a question here about it and still didnt manage to get it resolved (http://serverfault.com/questions/231661/xenserver-vms-continous-temporary-lag).
Since this appears to be a storage thing not being able to put up with 10 XP-SP3 and 2 W2k3 VMs, we got one storage blade for each of our BL460 servers to provide with DAS hence each server will have 4 instead of 2 SAS 10k drives.
Between RAID 10 and RAID 5 on a p400i raid controller, which do you recommend for improved performance? there are some confusing opinions on the net between those 2.
Currently (storage blade not installed yet) the p200i raid controller's smartarray on the BL460 allows for creation of a logical drive with RAID 10, and indeed thats the configuration we're using. but how is that possible with only 2 physical drives?