Hello all, A few notes w.r.t. section 48.4 of the LVS HOWTO (VMware problems with NTP/time) It -IS- possible to keep several hosts in sync time-wise in VMware, even on a simple laptop. I am currently running an LVS cluster and 2 webservers on my laptop with VMWare Server 1.0.7 and 1GB RAM. There have been no spontaneous cluster failovers (yet) today. For GSX / VMware Server: Pass the following options to the kernel via grub.conf: clock=pit nosmp noapic nolapic For RHEL5/CentOS5, you should use the following: clocksource=pit nosmp noapic nolapic Because this will disable all of Linux' intelligent clock tricks, you'll need to run NTPd to keep your clock in sync. More info at: <a href="http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1420" target="_blank">http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1420</a> For ESX servers, the solution is 'simpler': You need to lower the minimum time between clok requests: Configuration --> Software --> Advanced Settings --> Misc --> Misc.TimerMinHardPeriod Lower this value (it is in microseconds) More info at: <a href="http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2219" target="_blank">http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2219</a>