Painfully slow server/workstation - any brilliant suggestions?

Okay, I’ve got a pair of Dell Poweredge 1800 units. Decent machines. RAID5 arrays. Dual hyperthreading processors. SBS2003 with none of the extra stuff. No domain, none of the extra software.

The processors on these things never go past 20%, and the memory usage is always pretty low.

The machines run along just fine…sort of. Do whatever you want, and it’ll happen instantly. Unless the disks are being accessed. If the disks are being accessed (say, by the surveillance recording program for which these machines exist) you will be lucky if Task Manager or Internet Explorer will load in less than three or four minutes.

In all that time, the CPU doesn’t spike. The memory doesn’t spike. That machine isn’t really recording that much data - maybe 80-90 35Kb images per second. I’ve taken mid-level machines that were nowhere near as powerful as these things and gotten machines that actually, you know, WORK.

Anyone have any brilliant suggestions? It has got to be related to the disks (or more likely the controller), right?

-Joe

What sort of disk/controller combo do you have?

Is it Software or Hardware RAID?

Check the access mode for the disks (using the Device Manager). Check that they are set to DMA access. Check the BIOS, too.

Have you loaded the Dell Drivers? The default Win2K3 drivers may not be good enough.

Use PerfMon to collect some disk performance stats. In fact, Win2K3 may be collecting stats you don’t need and slowing you down.

Look at this too.

Si