[loeg]

Yeah. Fail in place over the service lifetime. When enough stuff is failed that it isn't worth keeping down there, you pull it up and refill it.

[49bc]

Based on the picture, "pulling it up" looks like a fairly intensive task, requiring boats, persons, etc.

That kind of thing eats directly into the ROI for a datacenter. I doubt it competes with a static building with a bunch of solar panels on top.

[loeg]

Might just fail-in-place, then. Although that looks pretty bad from an environmentalist perspective.