Re: feature suggestion to handle read errors during re-sync of raid5
From: Mikael Abrahamsson <hidden>
Date: 2010-01-31 17:56:33
On Sun, 31 Jan 2010, John Robinson wrote:
iirc part of the point of moving to 4K sectors is to improve the error correction to something like 1 in 10^20 or 22 without losing storage density, partly by using what was lost before in inter-sector gaps and partly because you can do better with more bits of ECC over more data. Frankly I wish they'd sacrificed a little storage density and improved the error rate a long time ago.
Looking at the data sheet for WD20EADS and WD20EARS they both have 10^15 "non-recoverable read errors per bits read", so at least in the data sheet nothing has really changed in the error rate aspect. -- Mikael Abrahamsson email: swmike@swm.pp.se