Hello,   You can have them in the same group, but I would put them in two pools.  Mixing SAS/SATA in same pool isn't recommended.    You can have VM's with VMDK or RDMs on different datastores.  However, just an FYI: the ASM/VE application doesn't currently support that.   vSphere HA and DRS aren't effected by the multiple pools, datastores or members as long as all the ESX servers have access to all the volumes.  VMware will be totally unaware.  A performance tip, make sure that the other VMDKs have their own virtualized iSCSI adapters in the VM settings. This will yield much better IO performance.  Regards,   -don 
Hi  I have a PS4000XV with RAID10 policy, and I wanna buy a ps4000E with RAID50 policy. is it possible to group these two members? is it recommended? With this group, I will deploy vmware vsphere 4.1 later. Considering of this scenario, if a virtual machine has 2 partitions, one is located at PS4000XV(10), the other is located at PS4000E (RAID50), is it ok for vsphere HA? how about performance? thanks
Group PS4000XV with PS4000E