Most of the pro grade hardware does come with those assurances, usually with support and replacement contracts as well. And make no mistake, they may replace t

Most of the pro grade hardware does come with those assurances, usually with support and replacement contracts as well. And make no mistake, they may replace things a lot -- at my old gig we had a lot of visits from Dell. To Dell's credit, we had a LOT of gear to cover, in several different colo spaces. Point is though, they price the cost of replacement into those guarantees. Doesn't mean the hardware will last longer, just that support & replacements are