[nylug-talk] How to set up Raid 1 on Ubuntu, Or Linux in gerneral

[Peter C. Norton]

On Fri, Jun 01, 2007 at 12:11:38PM -0400, sixtyfourbeets wrote:
> Linux boxen using software RAID trundling
> along with no obvious performance hits). YMMV, of course.
> ---------------------------------------------------------
> When taking into account that a 1 second delay on the server
> side could mean, for example, a customer/user getting
> the impression that a web site is taking too long to load;
> trundling along might not be sufficient.
> 
> Companies spend time measuring response time on servers
> and finding why a particular machine takes .5 seconds
> longer to respond with a particular software.

And this has almost nothing to do with the underlying technology, only
with the care that's gone into selecting the components. BTW, .5
seconds is forever in serious computing-land. What in the world makes
you think that a software RAID1 would have any time cost?
 
> But I too would like to see cold hard comparative numbers,
> they would be helpful in determining how much slower
> a machine would be with software RAID than without.

Yes, it would, wouldn't it? I think the place with the most research
along these lines right now would be sun since they're pimping out ZFS
for the masses. Look at their comparisons.

-Peter

-- 
The 5 year plan:
In five years we'll make up another plan.
Or just re-use this one.