On Fri, 13 Jan 2006, David Lee wrote:
(System: ONTAP 6.5.5)
We have a Windows 2003 server (SP1) which uses iSCSI to mount a drive onto a NetApps filer.
When transfering files the performance is very poor: it can take 5 minutes to transfer a 350 Mbyte file. Looking at Performance Monitor on Windows while a file transfer is taking place shows that Disk Queue Length readings can reach: Average=94, Maximum=2142
We are using a QLogic QLA4010 Host Bus Adapter with the latest firmware (3.0.0.4) and driver (2.1.0.8).
Any ideas? Thanks in advance.
Many belated thanks to those who replied to the query.
My colleague, on whose behalf I was asking, has now tried bypassing (avoiding) the Adapter. This seems to have cured the problem. (He's still not sure whether it is the Adapter itself, or our local use of it, which underlies the problem.)
Thanks again for your replies.