I recently ran into some issues with our off-box message store, and all of the research I came across pointed to performing an offline defrag of the message store. I also came across information regarding how long it would take, about 1 hour per 5Gb.
Say I have a message store that is 76Gb, but only 11Gb of that actually contains messages. The rest is empty whitespace. Can I assume that I will be looking at a 15 hour defrag based on the total size, or maybe just a 2 hour defrag based on the size minus the whitespace.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.