Note: This article is from 2007 and is quite prescient.
It's completely shameful how bad the specified read error rates are now.
It's to the point that if you read an entire disk 4TB you have a 32% chance of one bit being wrong!
That means hard disks can no longer be considered reliable devices that return the data written to them, you now need a second layer in software checking checksums.
It's completely shameful how bad the specified read error rates are now.
It's to the point that if you read an entire disk 4TB you have a 32% chance of one bit being wrong!
That means hard disks can no longer be considered reliable devices that return the data written to them, you now need a second layer in software checking checksums.
http://www.wolframalpha.com/input/?i=4TB+%2F+10^14+bit++in+%...
For extra money they sell hard disks with 10^15 reliability instead of 10^14 - this should be standard!