This is a sequel to the question/situation I asked about several weeks ago under the title. "Cannot map remote share via Sonicwall SSLVPN". That problem was solved by the use of static IP's at both ends of the VPN and the use of the proper domain name in the VPN login.
But now we have issues with efficiency of the connection(speed and reliability of file operations across the VPN).
To recap, the store runs a win2k3 server as a pdc with several workstations at the store location. The gateway is a Sonicwall TZ210 The WAN is fixed IP on a DSL connection. The other location (the shop) has two workstations using NetExtender VPN client, also through a fixed IP DSL connection. The work all the workstations do is manipulation of Excel spreadsheets, Word docs, and Quickbooks files, all stored on the server.
Now we have beeen told that even a cable DSL would not be fast enough to properly open and close the files without corrupting them, especially if more than one person is working on them at the same time. Instead it has been recommended to use RDC or GotoMyPC to an extra workstation. Is this all true, is the only way to get functionality through RDC and if so, what's the point of a VPN? If there is a speed that will make this setup feasible, what kind of service and speed would be necessary, short of FIOS?