Greetings - thanks for reading this long, somewhat confusing post.
I have one G5 HP host server with 1.6 TB of local disk space, one G7 with 2.5 TB of local disk space, and now a new G8 with 2 TB of local disk space. I have all production servers running on a VNXe 3150.
I currently back up VMs (Veeam) to the local disks of the host the VM does not run on (so if the VM runs on G5, I back it up to G7 local, and vice-versa). However, this is convoluted as the local disks on G7 are connected to the Veeam server through the Veeam VM settings (Veeam runs on G7) and mapped to a drive letter, and the G5 local disks are connected to another server which runs on the G5 server and then also mapped to a drive letter on the Veeam server. Whew... messy.
I was considering using the G5 for Veeam (direct install), once the G8 is in production. I would then backup VMs to the local disks in the dedicated G5 Veeam server, then likely copy the backups to a NAS just to have an extra copy of the backups off of the local disks. The G5 has about 32 GB RAM and (2) quad-core Intel E5440 @ 2.83, just to note. I can add a (3) more local disks.
I was thinking I could run the critical VMs from either the G5 directly (run from backup until I could get everything restored) or restore to the local disks in the G7 / G8 hosts.
Suggestions extremely welcomed regarding setting up the most efficient storage / backup solution with the equipment I've mentioned.
Also, I have an Exchange 2010 DAG setup. I run one server on the EMC and one server on the local drives of the G7. Any suggestions on where to run the exchange servers to provide the best chance of uptime should either a host or SAN go down is also appreciated.