# [OmniOS-discuss] Ang: Re: SSD rpool degraded

Dale Ghent daleg at omniti.com
Thu Jul 2 15:37:20 UTC 2015

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    > On Jul 2, 2015, at 11:03 AM, Johan Kragsterman <johan.kragsterman at 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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