Had a call open with VMware for sometime now as all my VM's (apart from one cluster) fail when I try and snapshot using vmtools option on ifirst execution, but works if I try again. Im told that its because the hosts havent been configured with a NTP server. But Im not sure how these should be configured. I have 2 clusters in the UK and 3 in Europe. Should I configure them with the NTP service, if so do i configure to the local DC's or just one DC?