We currently have two sites, a central HQ with central DC and a Collocation facility which is connected to the DC over the WAN via IPSEC VPN over the Internet. The colo facility really is serving up some backup services, backup MX, backup DNS, etc. currently and really does not really offer any services that users at the HQ site need to access. The two sites are connected via L3 IPSEC VPN across the Internet links which are currently TDM 10MB links at both sites. The building that the DC is in is not a very good place for a DC as it does not have backup power,etc. We are considering moving the entire DC to the colo facility to take advantage of the backup power and such that it offers. If we do this we are going to have users at the HQ accessing all their tools and applications at the collocation facility. This presents some obvious performance issues.
I would like to get some ideas of what others are doing to get somewhat LAN-like performance across the WAN for users with remote access to a central DC. Some ideas we had are to:
1. Get additional BW and continue to use the L3 VPN between sites over the Internet and then get WAAS/WAN optimizer solutions at both ends (WAAS---->FW<----IPSEC TUNNEL---->FW---->WAAS)
2. Get dedicated TDM BW between sites with WAN optimizers at both ends
3. Go with an MPLS/VPLS solution with an IPSEC tunnel between the sites
Just wanted to take a quick poll on what others are doing to get something like this done. Thanks in advance for replies.