Yes, they have both next-day and same-day on-site support plans. For hardware failures they will bring the part to your office/data center and perform the replacement. We're in a third party colocation facility and Dell is happy to dispatch techs there; we don't have to be present.

Had this for a work laptop a few years ago... That said, I think it was a design flaw in that model, had to have the MB replaced twice under warranty, the third time it was out of warranty and I just got assigned a new laptop.