Line of work 03
Installation and migration
The hardware is the easy part. The risk is in the window: the hours when the old platform is being switched off and the new one has not yet proved itself.
On site
We deliver into the data hall, mount, connect power and network, and run a functional test against the acceptance criteria written into the order. Access, escorting, lift bookings and goods-in rules differ at every facility, so we agree them with your provider before the delivery date rather than on the loading bay.
Packaging leaves with us. Rack elevations and the port map are updated to reflect what was actually installed, which is rarely identical to what was drawn.
Migration windows
A migration is planned backwards from the rollback point. Before the window opens we agree in writing: what moves, in what order, what the success test is at each step, at which moment the decision to roll back has to be taken, and who takes it.
Windows are normally outside business hours. We work to the clock we agreed: if the go/no-go time passes without a green test, we roll back and try again on another night. That discipline is unpopular at three in the morning and it is the reason migrations end without an incident report.
Standing practice. The old platform stays powered and reachable until the new one has run a full business cycle. Decommissioning is a separate, later job with its own date.
Acceptance
Installation ends with an acceptance test run against the order and a handover protocol signed on site by both parties. Anything outstanding is listed on the protocol with a date, not settled by email a fortnight later.