Physical installation.
WHAT TO PREPARE
The rails or mounting hardware The correct tools Labels An updated elevation diagram
WHAT TO CHECK BEFORE STARTING
That the position is free and correct That power and network are available That the equipment fits the rack depth
WHAT TO DO
Install rails first, verifying they are level Mount the equipment with assistance for anything heavy Connect power to both distribution units, on separate paths Connect network to both switches, where redundant Label every cable at both ends
WHAT TO VERIFY BEFORE LEAVING
That the equipment powers on That both power supplies are live That network links come up That it is reachable by its management interface
THAT LAST POINT
Verify remote management works while you are still there.
WHY
Otherwise the next problem requires another visit.
WHAT TO TIDY
Cables, routed and secured, with excess managed.
WHAT TO REMOVE
All packaging, from the hall.
WHAT TO UPDATE
The inventory and the elevation diagram, before leaving.