I have a server that is having a very odd issue. It has a few mapped drives via logon script that point to a Windows 2008 R2 file server and a CIFS share on an EMC SAN. I can access the shares but some of the folders (20% of them) I can't access and when trying to do so it sits for about 1-2 minutes then say network resource not available. It is not a security issue as I can access all folders on any of 100's of other servers and workstations. I thought maybe a NIC issue so moved to a new nic, replaced the cable and new switch port. On top of that, it just happended on a hyper-v cluster shared volume (this is the 3rd node of a hyper-v cluster) which uses qlogic HBA's to an EMC VNX SAN.
I was thinking it's maybe a hardware issue with IO but it's always the same folders. I also tried a UNC connection \\server\share to a physical server and it happens there too. Not random folders but always the same.
The specs are:
98 Gig RAM
2 Intel 5520 Nahelam procs
Quad Broadcom 5309 NIC's onboard
2 QLogic QLE2460 HBA's
Windows Datacenter 2008 R2 SP1 with all updates
All firmware is up to date from SUU 6.5.1
Has anyone ever seen anything like this? I am working with Dell but in tier 1 support right now which usually takes hours of diagnostics to escalate so am hoping for a quicker resolution through you all.
Thanks for any ideas.