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Date: Tue, 29 Nov 2011 20:02:28 +0100
From: Jarry <mr.jarry@gmail.com>
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Subject: Re: [gentoo-user] dmraid, mdraid, lvm, btrfs, what?
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On 29-Nov-11 17:53, Michael Mol wrote:

>> 1) First lesson - not all hard drives make good RAID hard drives.
>
> What makes a good RAID unit, and what makes a terrible RAID unit?

Some hard-drives are not suitable for raid at all. There
are many reasons for that, one example is error-recovery.
Check wiki for more info:

http://en.wikipedia.org/wiki/Time-Limited_Error_Recovery

In the first place, I would not recommend those "eco" and
"green" versions for raid at all. They have some saving
mechanisms which tend to activate at wrong time and cause
problems for raid-controllers (be it SW or HW). I'd say
it is worth to pay a few bucks more for enterprise-class
24/7 (or special "raid-edition") drives.

Jarry
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