> On Jul 2, 2015, at 11:03 AM, Johan Kragsterman <johan.kragster...@capvert.se> > wrote: > > It is only rpool, no data, but of coarse configuration data. So there are no > write-intensive applications writing to the drive, only log. Not even swap or > dump, they are on different devices. > > It would be nice to know if there was a way to tell wether it is the drive or > the port, though...
Considering the nature of the error message, you will have to start with the drive. The drive, at least, can send telemetry. A physical port cannot. Make sure your cables are seated correctly and so on. The AHCI driver sent a command to power on the drive and initialize it, and it did not receive the expected response. Drives (enterprise-grade or not) will fail very young (due to manufacturing defect) and, if they survive their first months in operation, they can go for years before failing. You might have a drive that fell out of the crib, or just a bad cable/connector. Sometimes these things take some hands-on detective work. /dale
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