Adding disk shelves (7200 and 7400)

[Brewer]

Just wanted to see how people go about adding disk shelves?
Online, or offline?
Health check on SP first.
If online, i presume adding one of the loops at a time, (green then red).
Then powering on the self?
Any suggestions?

[Cleanur]

online but the services required to.install the cage are included as part of the sale, so let HP do your first one.