While taking part in a storage install the last few days, including creating and deleting quite a few RAID groups and so forth, I’ve had to click on quite a few “Are you SURE?!” dialog boxes, even for completely idle, never-used LUNs. Here’s an idea for storage management folks: keep a bitmap of recently-accessed LUNs. Specifically, keep two; every five minutes zero the old one and flip them, then set a bit in the active bitmap for each LUN when it’s accessed. Then pop up an extra “You’ve accessed this LUN in the last five minutes! Are you SUPER-SURE?!” scary box if someone tries to delete or in some other way imperil one of those.
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