p4300 g2 is just a dl180 g6 with ilo nic , 4gb of ram (1 dimm slot out of 6 populated), e5520, and a p410/512 bbwc[fbwc?].
Lefthand o/s just stripes the 8 drives with raid-10 for o/s and temp and then raid (5/6/10) for the volume partition.
I just took 3 of these offline (wanna buy?) and i'm going to pimp the ram to 48gb (8gb rdimm ecc x 6) and maybe even swap in a e5620 since all of my compute is in the 5600 for vmotion.
What some folks have done is run two VSA's on one lefthand, say dev and prod. With VSA software you are limited to 5 volumes on controller 1:0 (10tb in the case of esxi) - kind of dumb. In theory it may be possible on hyper-v or using RDM to pimp this out more but they have a bunch of checks to prevent the haxors from optimizing their systems.
the p4300g2 has an amazing 10gb nic upgrade which is a 2gb stick of ram and nc550sfp card for like $2000 lol. It's likely the bare-metal o/s does not have drivers for all known cards but you can probably throw in a gen8 nic or fiber channel card and go to town. Either way if you hypervise and use the VSA (note the baremetal image has tons of lame checks in bash scripts to prevent using non-hp gear so don't bother) you could attach fiber or 10gb or 40gb nic's all day long as the hardware is neutral.
Anyhoo you could run dev/prod/test on lefthand1vsa and dev/prod/test on lefthand2vsa and rock 30tb off each physical machine. You can also reserve capacity for the lefthand vsa's and run light (read really light i/o) vm's on those machines too. If you haven't noticed that 2 is the highest performance it is because a 3 node system with network raid-1 has a 33% chance of mpio hitting a node with no local data, thus it would have to go back over the same nic's and ask another server for the data, get the data, and serve it up to you.
My testing shows that our 3-node p4300 g2 each with 8 x 450 15G SAS (24 drives) with disk raid-5 and network raid-1 over gigabit networking (ALB) with 2910al with full flow control performance equals that of 1 lsi 9260-8i with fastpath and 6 samsung 830 ssd's in raid-10.
Now you might say load up 8 ssd's and 10gb nic's but keep in mind the p4300 g2 wants to do 10gb primary /1gb secondary rather than 10/10