Re: How to avoid complete rebuild of RAID 6 array (6/8 active devices)

[David Greaves <david@dgreaves.com>]

Matthias Urlichs wrote:
> On Sun, 29 Jun 2008 17:58:30 -0400, Bill Davidsen wrote:
> 
>> Of course build an array out of drives so unstable that you can't safelt
>> *run* a check is another topic.
> 
> It's a topic that needs to be addressed sooner or later, however.
> 
> Let's face it, drives do develop bad spots.
> 
> Tossing a perfectly good drive because 0.0000064% of the data cannot be
> read is wasteful (assuming a 64-kByte area of an 1-terabyte disk).

I've found that once a disk starts to go bad there is a very strong tendency for
it to continue to deteriorate.

So I don't replace disks because they have a bad sector; I replace them because
I suspect they will fail more as time goes by.

Sure, some don't - I don't want to take that chance.

David