hard disks just seemed to disconnect briefly and come back

  • Thread starter Thread starter Yousuf Khan
  • Start date Start date
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Yousuf Khan

It seems like a couple of external USB drives simultaneously went
offline briefly and then came back into service again. These two drives
were in the same enclosure, so it's not surprising that they both
experienced simultaneous problems. I saw the following errors in the
Windows 7 event logs, regarding drives O & M:
Log Name: System
Source: volsnap
Date: 13/09/2010 12:56:08 AM
Event ID: 14
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: desktop-yjk_w7
Description:
The shadow copies of volume O: were aborted because of an IO failure on volume O:.
Click to expand...


There were several warning messages in the same log coming from the NTFS
and Disk sources, which I assume were related to the above error. No
errors listed in SMART for either drive, so I assume it was a connection
problem.

Other than the Windows event logs, is there anything that can monitor
errors on USB devices? Also anything that can monitor problems even on
internal SATA devices, because I've seen this sort of error on SATA
drives too.

Yousuf Khan
 
Not a direct anzwer to your question, but besides a connection
issue, it could also have been a power drop-out or brown-out.
PSUs for USB drives typically have a lot less reserves than PC PSUs.

Arno


Yousuf Khan said:
It seems like a couple of external USB drives simultaneously went
offline briefly and then came back into service again. These two drives
were in the same enclosure, so it's not surprising that they both
experienced simultaneous problems. I saw the following errors in the
Windows 7 event logs, regarding drives O & M:

There were several warning messages in the same log coming from the NTFS
and Disk sources, which I assume were related to the above error. No
errors listed in SMART for either drive, so I assume it was a connection
problem.
Click to expand...
 
Not a direct anzwer to your question, but besides a connection
issue, it could also have been a power drop-out or brown-out.
PSUs for USB drives typically have a lot less reserves than PC PSUs.

Arno
Click to expand...

That makes some sense, it would explain why none of the other USB drives
also experienced a drop-out at the same time.

Yousuf Khan
 
That makes some sense, it would explain why none of the other USB drives
also experienced a drop-out at the same time.
Click to expand...
Yousuf Khan
Click to expand...

So only the one with two drives? Makes sense to me. Although
I have had dying chipsets were just one USB port caused problems.

Arno
 
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