> They still work fine but power costs make them uneconomical compared to latest tech.
That's not necessarily the driving financial decision, in fact I'd argue company's with data center hardware purchases barely look at this number. It's more simple than that - their support runs out and its cheaper to buy a new piece of hardware (that IS more efficient) because the hardware vendors make extended support inordinately expensive.
Put yourselves in the shoes of a sales person at Dell selling enterprise server hardware and you'll see why this model makes sense.
That's not necessarily the driving financial decision, in fact I'd argue company's with data center hardware purchases barely look at this number. It's more simple than that - their support runs out and its cheaper to buy a new piece of hardware (that IS more efficient) because the hardware vendors make extended support inordinately expensive.
Put yourselves in the shoes of a sales person at Dell selling enterprise server hardware and you'll see why this model makes sense.