I look after an SBS 2011 STD running on Dell T310, 16GB Ram, Perc 700, 15k RAID 10 aray.
Backups were completing in 28 minutes nightly. Suddenly over 5 hours and frequently the backups fail. More worryingly if I restart the server netlogon, windows time, all exchange services fail to start. The server let you login but is unusable for about 10/15 minutes. After it sorts itself out I can start Windows Time, net logon and all exchange services.
Users seem to be able to use all services (network shares, SQL app) but the console performance/backup is absolutely terrible.
I've fired up procexp.exe and don't see anything odd, ram available, disk I/o just about zero, processor usage floating between 10 - 22%. Procexp verifies all images on the server, there is very little 3rd party software. Dell Openmanage see's no issue with any of the hardware.
The only change made to the server was an update to their LOB app. This also installed SQL CE 3.5 SP2. I've checked with LOB vendor them and no other client has reported any issues with this on our platform. The server does have 2008 R2 SQL running a small database but this has been in production for over a year with no issues.
Welcome ideas on how to sort this one out please