[mythtv-users] RAID 1 mirror with mythtv backend???
Will Dormann
wdormann at gmail.com
Fri Jan 25 23:37:53 UTC 2019
On 1/24/19 12:05 AM, Stephen Worthington wrote:
> Those are CRC errors, and in a large quantity like that they are
> normally indicative of a bad SATA cable (or one that is not firmly
> plugged on). Or possibly a USB cable problem in this case. Dirty
> connectors will also show up like this, and having the cat tread on
> the cable can also do it.
>
> If the cable is OK, then the next most likely candidate for the cause
> is a bad SATA port.
I concur here. From your SMART report:
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail
Always - 0
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age
Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age
Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age
Offline - 0
All of your raw values (the last column) are 0. This implies that the
drive itself is internally fine. Which generally leaves the SATA
controller and/or cable.
Additionally from your report:
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 1.5 Gb/s)
I assume that your controller is only SATA 1.0? If not, then that's a
likely sign that your cable is bad enough that the drive negotiated down
to a slower speed due to unreliable communications.
-WD
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