Re: feature suggestion to handle read errors during re-sync of raid5
From: John Robinson <hidden>
Date: 2010-01-31 16:17:09
On 30/01/2010 21:33, Mikael Abrahamsson wrote: [...]
I think the 4k sector size on WD20EARS (for instance) is supposed to add more ECC information but I'm not sure how this will affect the 10^14 error rate.
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. Cheers, John.