I am setting up shares on our DD160 for some SQL backups I'm going to be running. I 6 Windows 2008 R2 64-bit servers plus 4 Windows 7 laptops that need to access these shares. When I access the shares (using \\datadomain\share and \\datadomainip\share) from my laptop or 3 of the 6 servers I can access the shares fine. However, on three of my servers I get a network error (0x80004005) and can't access the shares. There is no restriction limiting access to certain clients or users in the share configuration. I have verified that "Client for Microsoft Networks" is enabled on the problem servers, IPv6 is disabled, the firewall is turned off on each of these clients, I've verified the registry settings for the network provider, and the servers can all ping the DD160 by DNS name and IP, nslookup works on these servers as well.

Any suggestions why these 3 servers can't access the shares when my laptop and 3 other servers have no problem?

Thanks.