Decommission a rack without losing track of a single drive.
A 2U server can hold eight drives. A populated rack can hold a hundred. The failure mode isn't the chassis walking off - it's one caddy that never made it onto anyone's list. We count drives, not boxes.
Switches and firewalls aren't usually treated as data-bearing, and they are. A retired firewall holds your VLAN layout, your firewall rules, and often credentials in a config that survives a factory reset done badly. Every network device we take gets a config erase recorded against its serial, at no extra charge, because it should never have been optional.
Most rack removals happen the week after a migration, when the old kit is powered down but still racked and nobody wants it in the way. Tell us the cutover date on the request and we'll schedule after it rather than around it. If the rack is in a shared MDF with landlord access rules, flag that too.