[CentOS] Software RAID1 with CentOS-6.2

[m.roth at 5-cent.us]

Miguel Medalha wrote:
>
> A few months ago I had an enormous amount of grief trying to understand
> why a RAID array in a new server kept getting corrupted and suddenly
> changing configuration. After a lot of despair and head scratching it
> turned out to be the SATA cables. This was a rack server from Asus with
> a SATA backplane. The cables, made by Foxconn, came pre-installed.
>
> After I replaced the SATA cables with new ones, all problems were gone
> and the array is now rock solid.

Thanks for this info, Miguel.
<snip>
> As an additional information, I quote from the Caviar Black range
> datasheet:
>
> "Desktop / Consumer RAID Environments - WD Caviar Black Hard Drives are
> tested and recommended for use in consumer-type RAID applications
> (RAID-0 /RAID-1).
> - Business Critical RAID Environments – WD Caviar Black Hard Drives are
> not recommended for and are not warranted for use in RAID environments
> utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as
> they are not designed for, nor tested in, these specific types of RAID
> applications. For all Business Critical RAID applications, please
> consider WD’s Enterprise Hard Drives that are specifically designed with
> RAID-specific, time-limited error recovery (TLER), are tested
> extensively in 24x7 RAID applications, and include features like
> enhanced RAFF technology and thermal extended burn-in testing."

Wonderful... NOT. We've got a number of Caviar Green, so I looked up its
datasheet... and it says the same.

That rebuild of my system at home? I think I'll look at commercial grade
drives....

       mark