Network workstations freeze for a few seconds every few days
Posted on 2014-07-21
Every few days, though not at any specific time, users say that their application freezes for 5-10 seconds. The applications are typically Word or InDesign. I have a user who texts me every time this happens so I have a record of the time.
Server 2003 peer-to-peer setup. Workstations are Windows 7. Server just has files and a network printer, but also runs Hamachi for a handful of remote users to gain access. Runs DHCP and DNS. No email or SQL. Nothing in any of the Event Logs. Nothing like cloud backup, local backup, shadow copy, remote access seems to coincide with the problem.
It's an old server. Dell PowerEdge 830, Pentium D 3 GHz, 2 GB RAM, CERC SATA 1.5 RAID controller with two pairs of mirrored drives (so 4 drives total). OS on one set, user data on the other.
I'm seeing instances where the Avg Disk Queue Length is at 100 for minutes at a time, but again, no pattern that I can see.
Consumer-grade 100 Mb 16-port unmanaged switch. Most workstations are wired. There are a few 5-port switches scattered about the office because they don't have enough drops, but everyone on the network, regardless of where they're located in the office, will notice a freeze.
Any thoughts on how I can isolate the problem? Is the server just tapped out?