I will be taking the big server that houses all users home directory off line to add additional hard drives Friday evening probably starting around 10:30PM. This will require pausing incoming e-mail as well since .procmailrc files and local e-mail boxes reside in home directories. Shell servers will be unavailable and all web services will be down. I expect this maintenance to take less than an hour.
Later in the morning I will be booting some servers into 5.1 kernels. 5.0.0 has proven to be an extremely unstable kernel so trying to get everything off of it before it breaks anything else like it did this morning. This will only involve brief outages.