In Building the perfect, cheap NAS I discuss bit rot which silently kills digital archives; my solution chosen back then builds on parchive which adds in a manual process redundancy to archives. This redundancy can be used to identify and correct bit rot to some extent. The issue with this approach is that it's manual … Continue reading RAID + dm-integrity vs bit rot
Tag: RAID
md and dm-integrity performance issue
I'm experimenting with protecting the perfect NAS RAID setup against bit rot (silent data corruption in long storage) and recently experimented with dm-integrity towards that end. The idea is to add checksums on the block level to each hard disk so that data corruption shows up as an I/O error to md, which would then … Continue reading md and dm-integrity performance issue
A crazy server recovery
If you're a seasoned server administrator then this post will boring beyond oblivion to you; the ingredients: a headless server (no screen, keyboard)years of personal backups on a linux software RAIDa botched system upgradehappy ending The pretext Several years ago I bought an HP Proliant microserver on discount and set up a NAS with Ubuntu … Continue reading A crazy server recovery
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