We have had some odd behavior over the last couple of days. We are running our SQL 2000 server on Windows 2003 VM Server. We currently backup the main DB (180GB) to the SAN, then use backup exec to backup the backup. This use to work fine, however since 3 days ago everytime Backupexec trys to backup the backup sqlservr.exe jumps to about 80-90% and the network utilisation goes from 0.2% to 20% (as you would expect). When we kill the backup sql cpu drops back to 10-15%. I have also tried to copy the file from the server to eliminate backup exec and the same thing happens. It this an issue with SQL?