The default appears to be 365 days, which seems to be rather long for leaving a potential non-existent element to exist in Snow. What should be taken into consideration when changing this number?
This parameter gave us some pain a few months back when it was introduced.
This is used to "clean-up" the physical hosts in virtual data centers. While these data centers are a little dynamic, they do not change THAT much. This is not about the movements of the virtual machines, that is maintained by our VMO technology. This is about cleaning up the physical VMware ESX/ Citrix XenServer/ MS Hyper-V systems that makeup the data center.
When it was originally introduced we set it to 2 days, which had the effect that if a physical system was simply turned off for 2 days, it would be removed from the data-center, and understandably that caused some problems.
365 days, is in my opinion a little to long, and 2 days was clearly two short. I like to set this to either 14 or 21 days, based on the habits of your server administrator maintenance schedules and such. The only real "gotcha" in this is if your admin likes to turn off physical hosts for long periods of time.
If you have any additional questions, I will be monitory this thread, or you can create a support ticket at firstname.lastname@example.org
Support Manager – North America
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