I am at a loss to explain the high values I am getting for the avg disk que length on my SW database server. The current value is approximately 65. If I understand correctly, the value should not exceed 2X the number of physical disks I have on the server.
Perhaps I should describe my current setup and network size to put this in perspective.
I have a primary poller, hot standby, additional web server and database server all on separate boxes. The hardware is configured thusly:
Primary/Hot Standby: Dual Dual Core 3GHz CPU/8 GB RAM/Two 73GB drives in RAID1/Windows Server 2003 R2 Enterprise
Additional Web server: Single Dual Core 3 GHz CPU/4 GB RAM/Two 73GB drives in RAID1/Windows Server 2003 R2 Enterprise
Database Server: Dual Quad Core 3GHz CPU/64 GB RAM/Four 120 GB 15K diskss in RAID1+0 array/Windows Server 2003 R2 Enterprise Ed/MS SQL 2005 Standard Ed.
The monitored network is currently 246 nodes, 3916 interfaces, and 17 volumes.
I would think there is no way that I should be seeing an avg disk que length of 65 right now! Any ideas?
Thanks for the help.
the value should not exceed 2X the number of physical disks I have on the server.
This depends of the RAID Type you are using and the number of disks involved in your RAID array, see below thread.
The original article is no more available, if you find it let me know :).