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...e mirror have both survived a smartctl -t offline scan. Also, a previous time it was with ad12, so I strongly doubt it is the drive. It seems like a geli partition is unable to handle a timeout from a drive. ad10: Model Family: Seagate Barracuda 7200.7 and 7200.7 Plus family Device Model: ST3160827AS ad12: Model Family: Seagate Barracuda 7200.7 and 7200.7 Plus family Device Model: ST3160827AS Sean P.S. I could not help myself with the subject line. :) -- scf@FreeBSD.org