knsgvn wrote:Do I need Essential bundle Enterprise or Essential bundle Standard version would be sufficient to backup critical servers as mentioned above?
Yes, it should be enough, but please take a look at the features available in different editions
for more info on available options.
There are some features available in the Enterprise edition only (for example, integration with EMC storage, SureBackup jobs, granular application item recovery for Exchange, SQL Server etc.), so I would recommend to use Essentials Enterprise edition bundle.
knsgvn wrote:Can I get away with Veeam licenses for just 1 host 2 CPU by VMotion all VMs to 1 the licensed host at the time of backup?
You should have license keys for all source hosts where protected VMs reside. If you're ok with doing VM VMotion every time you need a backup, then it could work, but I assume you want to automatically backup all VMs on daily basis, correct?
knsgvn wrote:I found an affordable Thinkmate NAS server with specification below and it will be strictly use for backup. Windows 2012 OS and Veeam backup software will be housing this server. This server can be configure for Sata or SAS disk but SAS disk is too expensive and way over my budget. I this server doable?
The specs look ok to me. Please take a look at existing topic with a similar question > Veeam Backup Proxy Server Sizing
and Recommendations for backup storage, backup target