mdiver wrote:Fortunately, our stuns last only for a few seconds. The whole snapshot commit takes between 5-15min. - depending on if it was an active-full or an incremental run.
This may be where there is a misunderstanding, the improvements in vSphere 6.0 are not so much about improving the length of the commit, although there is normally some improvement here as well, but on significantly reducing the stun time, which is far more disruptive. Prior to vSphere 6, even a totally idle VM with 12 VMDKs could easily stun for 30 seconds, with vSphere 6.0 that time is down to 1-2 seconds in most cases.
I would consider 1-5 minutes of consolidate time and a few seconds of stun time for a large/busy Exchange server to be excellent. With versions of vSphere prior to 6.0 I've seen Exchange/SQL servers that take 60+ minutes to consolidate (or worse, never consolidate), and stun times measured in minutes. That's the huge improvement in vSphere 6.