We're in the process of planning an upcoming Windows SAP environment hosted in a Vmware ESXi 5 environment. We have a particular disk layout in mind using a combination of VMDK (over NFS datastores) and FC RDM's. As per requirements / best practice for SAP, we have around 7 FC RDM's, plus 4 vmdk's (plus OS/pagefile/etc) per guest.
We have planned to use 3 or 4 separate VM SCSI controllers to separate datafile, logfile, binaries and OS disks. This is for performance reasons and because we're closing in on the 15 disk limit per SCSI controller. So, an example of the config we're looking for is this:
We produced this by manually creating/mapping the LUNs on filers and mapping them through to the guest in vcenter. However, we would prefer to use SnapDrive (we're using version 6.3.1 on Windows 2008) to do all of this for us, but there doesn't seem to be a way to tell SnapDrive which guest SCSI controller to use when creating/connecting the RDM's. Does anyone know if this is possible with SnapDrive (apologies if I've missed something), or if not how SnapDrive decides which controller to use when creating new LUN's?
Thanks in advance,