I've had this problem for quite a while now. Virtual Center seems to periodically drop performance statistics. I would show another example where it dropped several days, but when I installed the upgrade yesterday I apparently selected a bad option along the way and reinitialized my database.
NTP is configured correctly and my Hosts and VC are synced to the same NTP source. When I examine the clocks they are to all appearances exactly in sync. The timezones are also in sync, and other databases on the SQL Server holding the data don't drop records w/o a good reason. Tech support has taken a couple stabs at this w/o much success. Any ideas?
There are also some issues with stat rollups causing some database issues (sizing), though at this point I haven't worked through getting those fixed. It was thought this problem was fixed in 2.0.1 but it wasn't.
Yes, I did. I suspect when they fix yours they'll fix mine as well.
It's kind of difficult to make plans when the data does that. Management also gives the "fish eye" to charts that look like those.