Backup Standards with SAN

I am new this infrastructure and would like to know two things:

1. What is the best way to link ArcServe and my SAN for this SMB with 100 employees, 9 VMs. Should I use a proxy server to run the backups of VM drives, use the VMK client on a separate sever or use ArcServe to back directly to SAN?

2. What would  the best Exchange 2010 redundancy plan, i.e., DAGs, Echange Hosting, or VM BACK UP to SAN with Bare Metal restore capibilities?
alandtreNetwork ManagerAsked:
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nappy_dConnect With a Mentor There are a 1000 ways to skin the technology cat.Commented:
You should purchase the Arcserver enterprise module and client agent for virtual machines. You will need one agent license for each virtual machine.

The enterprise module helps with reduplication which reduces the amount of duplicated data in your backup, which in turn reduces your amount of data backed up, which then reduces the amount of time it takes to backup your data. This module also gives me the ability to have more than 4 steams or nodes for concurrent backups. The feature I like is that I can use both of the tape drives in my library concurrently for faster backups.

I backup 6TB over a single gigE link with Arcserve. My throughput is on average 4200MB/m.

Also, I stage my data using DDT(disk to disk to tape) which I find I get better throughput.
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