We are experiencing some slow login/outs at peak times, i.e. at the start and end of each lesson. It can take up to 10 minutes for students to login at the worst of times.
Whenever I test it, it usually takes me about 1-2 minutes to login but I can never login to 100 workstations all at once.. obviously!!
I am fairly certain its not DNS related, as it varies depending on server load, and also browsing the file server that hosts the home drives whilst people are login in is very slow. We have 3 classes so about 90 terminals plus teachers laptops probably about 50-70 on during the day. Plus year 7 student’s 90 of them have their own laptops which they may or may not be using at any one time.
Now the main File server that holds the home drives is overloaded and under spec’d
Dual Xeon 2.4Gzh
2GB of Ram
Intel Board with dual Gig bonded Ethernet
Disk Array controller Adaptec ATA1200 with mirrored WD1600SB Disks
Separate 40GB IDE disk on the IDE controller with the Roaming Profiles on.
Unfortunately the Server was spec’d and bought before I arrived.
I Believe the problem lies with the IDE disk array, as its not designed to support 100s of users accessing it all at the same time. So I am putting in my budget for next April a new file server specifically for storage and ideally would like to put Microsoft Windows Storage Server Edition on it so it can’t be used for anything else. I have a quote for the file server below at £3250 ish Ex VAT
Intel Compass Creek Storage Server
SSR212CC 2U Chassis fully redundant power
2Gb (2 X1Gb) ECC REG DDR memory
Five Western Digital Raptor 150Gb SATA hard drives
My Question is really has anyone experienced this sort of problem and resolved it in the past? I don’t want to recommend a £3.5K solution to the problem and it still be there after I migrate everyone onto the new server. I updated the Network Infrastructure last year got Giga bit Ethernet to each Cab and a 6 Gig Link between the Two main Cabs. Each switch has 1Gb uplink and 100Mb to the desktops. Watching the Task manager the network utilization doesn’t get saturated at peak times.
In the mean time I think I might move the roaming profiles off that server onto the VLE Server which doesn’t do a lot at the moment.