I have a VPN tunnel site to site connection set up that connects multiple remote office together.
Currently each office is running a Window 2012 R2 Std server. So my plan is to set up a iSCSI backup server on a Windows 2012 R2 Std server at my central office to back up the multiple site server over my existing VPN network.
I understand that I need a fast network connection plus Gigabit NIC, CAT6e cables, and switches to get the best result; however that set up is not option because of cost. I do have a gigabit switch, 1GB NIC on the server and a 20/20MB fiber connection at the central office where the iSCSI backup server will be stored. All the remote site has similar hardware but with 50MB/12MB business class ISP connection.
I'm able to set this up, however before I do I want know if this is even worth trying because some of my location still have 100MB CAT5e cabling and the internet connection is not the fastest. I'm afraid this will only make a small difference in transfer speed, not enough to invest the time and money in.
Also, most likely I would be running a backup software like ShadowProtect.
Is there some else out there with my similar network running a iSCSI backup server to perform remote backup? If so, please let me know how's your backup performance like.