[LINK] Leave on, or turn off?

[John Clarke]

On Thu, Nov 30, 2006 at 04:17:32 +1100, Marghanita da Cruz wrote:

> sometimes it is the redundancy mechanism that is less reliable than the 
> disks themselves...

It is.  Redundancy increases availability but decreases reliability.

Availability is improved because when one disc drive fails your system
keeps running and you don't have an outage.

Reliability is reduced because you have more things that can break, so
more things will break.


Cheers,

John
-- 
Shirley any sysadmin worth his NaCl knows that the steady-state
of any real-world RAID-system includes at least one failed disk?
            -- Tanuki