Citation :
These are problems with the cables and connections to the drive, both power and data, or the quality of the power supplied. If your errors match one of these, then almost certainly, your drive is completely fine. There have been many drives returned or thrown out, after numerous errors similar to the following issues, that were entirely the fault of the cables or power or connectors used, NOT the drive itself.
Drive interface issue #1
An example:
ata3.00: exception Emask 0x50 SAct 0x1 SErr 0x280900 action 0x6 frozen
ata3.00: irq_stat 0x08000000, interface fatal error
ata3: SError: { 10B8B BadCRC } often may also include DisPar, UnrecovData, and/or HostInt
From an expert:
"Your machine seems to be suffering genuine link layer problem.
In most cases, this indicates hardware problem and in my experience,
common causes are (in the order of ballpark frequency)...
# inadequate power supply
# device and controller don't like each other on 3Gbps
# cable too long or flaky connector (especially with eSATA cables or genders or backplanes)
# faulty controller or drive"
--
tejun (http://lkml.org/lkml/2008/12/2/426)
(written by one of the foremost experts)
The presence of BadCRC is a pretty good indicator of a poor quality SATA cable. However, if a better cable does not solve the issue, then it is probably a power problem (loose power cable or backplane connection, poor connectors, poor power splitter, overloaded power supply, too many drives on power rail, bad power supply, etc).
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