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My guess would guess your USB connection is being lost/reconnecting.<br>
Are the drives USB3, they seem more prone to interference.<br>
What OS and version.<br>
<br>
<div class="moz-cite-prefix">On 2017-09-24 07:46 PM, Henry Bouma
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAHxEBZB-2jPn0zDCNUR6X3GPk-LB517YNv8xK2j2tbm4N0-hvw@mail.gmail.com">
<div dir="ltr">I have a WD EasyStore 8TB (Model <span
style="color:rgb(71,71,71);font-family:Arial,Helvetica,sans-serif">WDBCKA0080HBK-NESN)
that is giving the attached error. I see no errors in the
S.M.A.R.T. drive logs, nor do I see any problems when manually
running tests on the drive. The drive is only 3 days old. I
have also been seeing this on my other USB drive (WD EasyStore
4TB model </span><span
style="color:rgb(73,73,74);font-family:Arial,Helvetica,sans-serif;font-size:13px">WDBCKA0040HBK-NESN.
I cannot tell if this is a false positive or not. </span><span
style="color:rgb(71,71,71);font-family:Arial,Helvetica,sans-serif">I
have been getting emails off and on for the past day. Usually
every couple of hours. </span>
<div><font color="#474747" face="Arial, Helvetica, sans-serif"><br>
</font></div>
<div><font color="#474747" face="Arial, Helvetica, sans-serif">Here
is what I see in my syslog:</font></div>
<div><font color="#474747" face="Arial, Helvetica, sans-serif"><br>
</font></div>
<div><font color="#474747">
<div style="font-family:Arial,Helvetica,sans-serif">Sep 24
08:10:54 Henry-Server smartd[845]: Device: /dev/sdg [SAT],
not capable of SMART self-check</div>
<div style="font-family:Arial,Helvetica,sans-serif">Sep 24
08:10:56 Henry-Server smartd[845]: Device: /dev/sdg [SAT],
failed to read SMART Attribute Data</div>
<div style="font-family:Arial,Helvetica,sans-serif"><br>
</div>
<div style="font-family:Arial,Helvetica,sans-serif">Later, I
get the following:</div>
<div style="font-family:Arial,Helvetica,sans-serif">
<div><br>
</div>
<div>Sep 24 08:40:43 Henry-Server smartd[845]: Device:
/dev/sdg [SAT], read SMART Attribute Data worked again,
warning condition reset after 1 email</div>
</div>
</font><br>
</div>
</div>
</blockquote>
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