Date	2018-01-02
Authors	John Simmons
Status	In Progress
Summary	Microsoft require all stacks to have maintenance run on them.
Impact	All servers will go through a restart period making each TIS environment unavailable for a short period

Root Cause

Microsoft require an update to all of our virtual machines running in all environments.

Trigger

email from Microsoft saying they would restart the VM's if we didnt schedule it soon.

Rolling upgrade plan is being implemented, Current proposed date for update works is Friday 5th January 2018

e.g. monitoring dashboards