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My mailserver's mailstore is on two mirrored external hard disks.
This morning I found out that one had silently failed in June. The other failed this morning around 7am.
I've just ordered a new external raid enclosure with status lights rather than just power on lights!
Luckily it seems that it was the enclosures failing, not the disks. Currently making a backup of the most recent copy of the mailstore. before doing anything else!
Sigh. Mirrored disks are great, unless you don't notice that they're no longer mirrored because one has failed.
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