rebooting DL380 G3

[Richard van der hoek]

Hello, I have a problem with 4 servers in differant domains, All are dl30g3 and one of 2 cluster servers, I am running win2000 sp4 with the latest PSP and firmware.
When I try to boot the server, after the screen loading windows, an empty blue screen appears and the disks activity goes to max, that takes an 15 to 20 minutes and then the disk activity returns to normal, after that 15 minutes the logon screen appears and when I type in my credentials the screen freezes again with max disk activity and that also takes about 15 to 20 minutes. when that is over and I am logged in it takes about 15 minutes before all the services and processes and cluster is up and running. So it takes about an hour before the server is ready and then everything works fine.
does anyone know what this problem can be?