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Windows 7: Corruption archiving .rar files to external drives

23 Feb 2016   #21
tgfyhre

Windows 7 32bit Home Premium
 
 

Could it be some kind of write-caching issue?

Just checked one of the enclosures and all 4 drives have write-caching disabled ("quick removal" is selected).

I see there are several threads in here with similar issues with copying files to external drives and corruption. None mention archive files in particular. I'm wondering now if non-archive files I've been copying over have also been getting corrupted without me even knowing it. Scary thought. I think I'll be using Teracopy for non-archive files going forward until I can figure out what's happening here as a precaution.

It's weird because I haven't had any archive tests fail if I archive to my internal drive and then copy over to the external, but that takes twice the time. But that suggests that it's not the copying that's an issue - it seems to point specifically to me archiving directly to the external drive, which I've never had a problem with before.


My System SpecsSystem Spec
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23 Feb 2016   #22
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

Possibly. Try the operation again, but monitor the \Temp folder - how large does it become? Are there any temporary files left over after the rar completes/fails?

One option is to perform the rar locally, them move to USB when complete.
My System SpecsSystem Spec
25 Feb 2016   #23
tgfyhre

Windows 7 32bit Home Premium
 
 

I archived some rar files to one of the external drives today and there was no corruption. It seems totally random when this happens which makes it difficult to track down. I'm still wondering if my USB card is having issues.

I hate the idea of archiving locally and then using Teracopy to copy them over externally because that takes twice the amount of time as just archiving directly to the target drive.
My System SpecsSystem Spec
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25 Feb 2016   #24
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

It sounds like an I/O though put limitation, and I'm not sure what be done about it.

If you use robocopy to move the archives, it will only the newer changes. Perhaps taking longer to archive locally is a tradeoff you may have to accept in order to guarantee clean archives?
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 Corruption archiving .rar files to external drives




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