Here's one I've been working on for a week and a half. Users started complaining of network application slow down and getting disconnected from the network starting March 27th. Workstations would start to lock when working with re-directed my documents files on the network. Eventually they time out and the workstation says it's working with files offline. Users also get "Outlook is requesting information from the server" messages. The event logs do not indicate ANY issues BUT there is a persistant event ID related to ESE that started the same day. (See attached file) Now I can understand if it takes exchange 200-300 seconds to write data to the database that network clients may also be timing out when writing information to the server, so I assume this is what is causing the clients to drop offline.
Replaced networking components including switches, nic in server. No change. Monitored internet traffic for suspicious patterns, all workstations and server have AV no infections. Seems like even when I client drops off the server, they are still able to ping the IP and name so RAW IP traffic isn't affected.
Contacted HP, we ran thru all of the steps they indicate should fix the problem. Updates to drivers, firmware, ran diagnosis on RAID arrays nothing showed as bad. HP washes their hands of it and says it's not a hardware problem. They did send me a new hard drive cage and SCSI cable. I replaced it on Friday. The server worked fine on Monday, tuesday it started having the same issues again.
I'm out of ideas. Any help would be great! The ESE 508 event ID isn't well reported on the net or Microsoft's site for that matter.
Network Specs:
HP ML350 G4p, 4GB Ram, Dual 3Ghz Processors.
Smart Array 641 Controller (64MB RAM)
(2) 72GB drives in RAID 1-OS (4) 72GB drives in RAID 5-Data
SBS 2003 Premium
Trend Micro SMB Client/Server/Messaging anti-virus
Approx 40 clients, 90% XP SP 10% Windows 2000
48 port Gigabit 3com managed switch + 8 port 100/10 switch + 2Mb wireless wide area link to 2nd location which has a 24 port 10/100 switch. (Users in both locations are having the issues)
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