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Bad Drive or Bad Cable?

Featured Replies

Hi Guys,

 

Drive just red balled during a session of heavy writes -- when I woke up it had a red X and was set to Unassigned. 

Any way to tell if this is a bad drive or bad cable etc?
 

I tried to run SMART tests on the drive, but those options are grayed out

 

Diagnostics are attached

tower-smart-20170606-0721.zip

  • Community Expert

Disk dropped offline, you need to reboot/power cycle to be able to get a SMART report.

When a drive loses connection with the controller, the drive will drop from the array and also be unavailable for smart reports. Rebooting will usually restore connectivity and allow you to get the smart report.

 

Vast majority of the time these things are cable related, especially if you've recently had occasion to open the server and rattle the cables. The smart report will be useful to see if there are any significant disk issues.

  • Author
24 minutes ago, bjp999 said:

When a drive loses connection with the controller, the drive will drop from the array and also be unavailable for smart reports. Rebooting will usually restore connectivity and allow you to get the smart report.

 

Vast majority of the time these things are cable related, especially if you've recently had occasion to open the server and rattle the cables. The smart report will be useful to see if there are any significant disk issues.

 

Thanks. Generating SMART report now. Will post back as soon as it's done

  • Community Expert

SMART looks fine, but there are signs of a bad SATA cable.

 

199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       47

 

Replace it and rebuild to the same disk.

  • Author
18 minutes ago, johnnie.black said:

SMART looks fine, but there are signs of a bad SATA cable.

 


199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       47

 

Replace it and rebuild to the same disk.

 

Can't seem to locate the steps for rebuilding to the same disk... 

  • Community Expert

stop array, unassign disk, start array, stop array, re-assign disk, start array to begin rebuild.

  • Author
1 minute ago, johnnie.black said:

stop array, unassign disk, start array, stop array, re-assign disk, start array to begin rebuild.

 

Thanks!

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