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Bit Rot

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I've been using an uraid server for almost 10 years. It's had power failures, disk failures, moves etc.

 

However today I decided to watch a show that I've stored on it since almost day one. The amount of failures in the video ... pretty high. Almost unwatchable.

 

So - what am I doing wrong? How much other data have I lost due to this?

 

I notice the monhtly parity check trusts the data disks over parity disks - is this the correct thing?

 

I've got 2 parity disks 8 data disks and some cache/etc disks - but why is my data being corrupted?

 

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It isn't the server. It's my stupid fire-stick.

 

Apologies.

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Did it ever find sync errors after the monthly checks? In my experience what's typically called bit rot is practically non existent, data corruption due to bad ram, filesystem corruption, bad rebuilds, etc, that's a different matter.

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the file integrity plugin, isn't that supposed to scan disk and calculate a hash that you can match against to prevent corruption, or was i sold a pipe dream.

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47 minutes ago, ijuarez said:

the file integrity plugin, isn't that supposed to scan disk and calculate a hash that you can match against to prevent corruption, or was i sold a pipe dream.

Yes, but if there is corruption detected you still need to have backups to recover from. 99.9% of the time if corruption occurred, it wasn't the disks fault. Bad RAM would be the biggest issue, and that would potentially corrupt reads or writes or both. Disks are very good at detecting when they can't get an accurate read, and notify the OS that something is wrong.

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