One of our gentoo vmware servers crashed and stopped all running VMs on the server. After looking trough the logs i found out that vmware server had filled the /tmp partion which was 1GB. What i didn’t know is that vmware requires the /tmp partion to  be equivalent to 1.5 times the amount of memory on the host. Otherwise you will experience vm crashes. To change the tmp location edit

/etc/vmware/config

and add the following line tmpDirectory = “/<your>/<new>/<tmp>/<directory>”

Be sure that the specified directory is on a local hard drive and that the user running the VMware software has write permissions for that directory. For more infos check out

http://www.vmware.com/support/gsx3/doc/intro_sysreqs_host_gsx.html