Right now we have an OK sized database, it's about 200GB of warehouse data, and 20GB of OLTP type data. We are running it on a dual CPU Xeon CPU with 4 cores each with a pretty basic storage setup due to limited funds... we have two array controllers one for the system and data and one for the logs... the data controller has two arrays... a RAID1 for the system and a RAID1+0 for the data and the other controller is RAID1+0 each controller has six 147GB drives on them.. pretty basic setup with 12GB of RAM and SQL Server 2008 Standard. This has worked out OK for us so far... but we are now doing system upgrades and moving anything we can to a virtualized environment.
We currently are using ESXi hosts with failover / redundancy with two shared storage systems (HP P2000's) all through redundant fiber channel connections.
We never looked at virtualizing SQL Server but with the cost of SQL Server 2012 being so high per core now, we are thinking it might be time.
Our system would have all the data stored on the shared storage, and broken up into logical arrays one for the OS storage, one for the data storage one for the log storage, and one for tempdb. We wanted to dedicate 32GB of RAM to this system, which is a big increase over our current 12GB... but when it comes down to processor setup, not sure what to do, since we have a minimum 4 core purchase for 2012 standard, we assumed set up 4 virtual processors (our host will be a 2 CPU system with 6 cores on each CPU as the base setup right now and have 64GB to 128 GB of RAM total).
Are there any considerations we need to take into account for this type of setup? We are a little lost on the disk setup, as there are multiple layers to get to the physical media, you have the ESX Drive storage, the storage array setup, the host setup, then the physical disk... We always did our disks as 64K sectors to match up with the page size (and with the offset in older windows to make it align right) but not sure what you have to do in this type of setup...
any suggestions or things to look into before we decide on this route?