we are planning to deploy a new vsphere 5 environment in parallel to our current esx 3.5 area.
we currently have 3 HP Proliant DL360 G6's with iSCSI HBA's connected to EQUALLOGIC SAN Storage running RAID-50.
each G6 is running with 48GB of ram each, so far for all our VM's we are using between 20-28GB on each G6.
we have about 30-35 VM's, the most heaviest is exchange 2010, entire mail server is virtualized.
some backup DC's, Webservers, Terminal Servers and some misc boxes.
we had installed ESX 3.5 on local 72GB, 15k RPM local drives, RAID-1 and the VM's are basically running of of the SAN storage.
we are getting 2 PS6100's that are going to be configured RAID-10 and planning to get 3 new DL360 Gen8's.
we would do the ESXi 5 OS as local storage RAID-1 and host the VM's on the SAN.
in some forums i have seen people say to put the vswap on local storage? would that be recommended thing to do or would it be overkill for our environment?
also if i want to do a VM on local storage, would SSD be the way to go for those or regular spinning disks?