I had a thought for a client for backup of the virtualized environment and SAN.
Currently, they have:
12TB in SAN storage HP P4000 with two HP 4Gig fiber switchses
2 ESX hosts in an HA cluster and one vCentre with 30 guests(Windows/Linux)
The ESX Hosts are HP DL 380G6 with 32GB RAM
The ESX hosts, connect to the SAN over 4GB fiber
They have a separate backup server that has 48TB of disk space for 5 weeks of online b/u
The Backup server is an HP DL380G7 with 32GB RAM
The ESX hosts connect to the LAN and the LAN via a single gigE link
A full backup takes them nearly 3 days to complete.
I think the bottleneck is the gigE LAN connection.
I suggested they implement 10GigE for backups but the proiblem is that while they can afford the 10GigE NICs, the cost for a 10GigE blade is over 10 000 and out of their budget scope right now.
Here is my suggestion:
Create another VMWare kernel port and assign the 10GigE NICs to this kernel port
Use crossover cables between their ESX servers and the backup servers
They should now be able improve their backup window by at least 30%
Do you think this would work and work well for backups?