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DSHR s Blog
Tuesday, March 16, 2021
Correlated Failures
The invaluable statistics published by Backblaze show that, despite being built from technologies close to the physical limits (Heat-Assisted Magnetic Recording, 3D NAND Flash), modern digital storage media are extraordinarily reliable. However, I have long believed that the models that attempt to project the reliability of digital storage
systems from the statistics of
media reliability are wildly optimistic. They ignore foreseeable causes of data loss such as Coronal Mass Ejections and ransomware attacks, which cause
correlated failures among the media in the system. No matter how many they are, if all replicas are destroyed or corrupted the data is irrecoverable. ....

Shujie Han , Stathis Maneas , Bianca Schroeder , Sun Microsystems , Chinese University Of Hong Kong , Heat Assisted Magnetic Recording , Coronal Mass Ejections , Dominant Contributor , Comprehensive Study , Storage Subsystem Failure Characteristics , Annual Failure Rate , Chinese University , Hong Kong , In Depth Study , Correlated Failures , Based Data Centers , Solomon Coding , Reconstruction Coding , Large Scale Enterprise Storage Deployments , பியான்கா ஸ்க்ரோடர் , சூரியன் மைக்ரோசிஸ்டம்ஸ் , சீன பல்கலைக்கழகம் ஆஃப் ஹாங் காங் , வெப்பம் உதவி காந்த பதிவு , விரிவான படிப்பு , ஆண்டு தோல்வி ரேட் , சீன பல்கலைக்கழகம் ,