[CentOS] settings up cheap a NAS / SAN server, is it possible?

Rudi Ahlers Rudi at SoftDux.com
Tue Jul 1 06:07:55 UTC 2008

Les Mikesell wrote:
> Rudi Ahlers wrote:
>> David Mackintosh wrote:
>>> On Mon, Jun 30, 2008 at 02:08:33PM -0500, Les Mikesell wrote:
>>>> Have you updated to Centos 5.2 yet?  And if so, did it improve NFS 
>>>> performance?
>>> Sorry, these computers are in production now so I can't fiddle with 
>>> them.
>>> Besides, this would be a "long" upgrade -- they are both CentOS 4.x 
>>> systems.
>>> _______________________________________________
>> This raises an interesting question. What do you do in this kind of 
>> scenario? How do you upgrade a NAS / SAN with say 5 / 10 TB worth of 
>> data?
> I haven't done anything that big, but I normally put the OS on a small 
> mirrored pair of swappable drives so an upgrade consists of swapping 
> those drives with a new set pre-installed in a spare chassis.  That 
> way you are only down for the time it takes to reboot and if anything 
> goes wrong you can put the old set back.  In any case you wouldn't be 
> doing anything to the data partitions in an upgrade.
ok, so in your setup the OS is totally separate from the data itself?

So, I guess I need to rethink my setup. Since I have a 2U chassis, which 
can only take 6 drives, I guess I should maybe look into running the OS 
from a USB memory stick or something.


Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
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