[rescue] little low-wattage servers

[Andrew Jones]

On 02/06/2012 03:21 PM, J. Alexander Jacocks wrote:
>
> In the old days of having to purchase a VxVM (hp-ux/Solaris), or a
> RAID-feature (DIGITAL UNIX/Tru64) license, hardware RAID was often
> cheaper.  And, we didn't use to have the glut of unused CPU cycles that
> most modern hardware provide.  So, hardware RAID controllers definitely
> made sense.
>
> That was my whole argument.  Is that more clear?
>

CPU cycles were never *really* the problem, even back when CPU time was 
expensive.

It's cache consistency -- dodging the RAID-5/6 write hole, controlling 
data corruption.