NTP settings on host - quiesing issues

HI all,

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?
MattAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Use an External Time Source. (e.g. internet, gps clock)

Point the DCs to the same External Time Source.

Disable VMs updating time form Hosts.

Members of the domain will get time from DC.
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MattAuthor Commented:
So on my hosts I should configure with an external time source?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, that would be better.
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MattAuthor Commented:
With these? but if the hosts are in different time zones how does that work?

server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
server 3.pool.ntp.org
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
All Your hosts, will be in GMT.
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MattAuthor Commented:
Hence you should never tick the box to syn VM time with host, correct?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Well if you did, the Time Zone setting on the VM would take effect!

But it's recommended to sync your Windows VMs with the Domain.
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MattAuthor Commented:
Ive added 0.pool.ntp.org to the NTP configuration and restarted the service on the host. Still doesn't sync correct time?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
access to 0.pool.ntp.org is not blocked ?

what time is it a showing?
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MattAuthor Commented:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Update to 5.5 U1
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MattAuthor Commented:
Thats quite a big job to fix a small issue.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
It may also fix the SSL security issue.
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MattAuthor Commented:
Bug fix update fixed issue.
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