What about a catastrophic event that wipes out millions of nodes

[jlpell]

Related forum threads :

What are the chances for data loss?

I made some quick calculations, but my math skills are terrible, so please correct me if I’m a complete idiot If we have a 1% chance of losing one of the minimum number of 4 copies within the time frame needed to detect and correct such losses, then we have a 1/100000000 chance to lose all 4 copies, which is really small. However, if we have 100,000 files, each 1 GB big (1024 blocks), then we would have only about a 36% chance that over any such time frames no file would get lost …

Preventing data loss using parity checks

Self encryption breaks a file up into chunks before being uploaded. The entire file becomes corrupt if one of those chunks goes missing. I’m interested in techniques to recover from this sort of issue. Let’s put aside the existing high security of chunks via redundancy and data chains, and consider how users themselves may further reduce the chance of corruption or loss of their files on the network. The most promising technique I found is Parchive which creates .par files used to recover miss…