Re: ASP and RAID-5 configuration

[rob@xxxxxxxxx]

I really don't see any point to creating two ASP's here.  I think the 
concept of separating your os into one area and your applications into 
another comes from a PC mentality.  Doing this just complicates a lot of 
stuff.  You end up getting free space in one ASP when you could be tight 
in another.  I also am willing to wager that the default setup program for 
most iSeries applications do not ask you which asp to install on and will 
end up defaulting it to asp 1.

Multiple asp's make sense if you are doing something like
- Journalling your files and putting your journal receivers in a different 
library in a different asp in case of catastrophic disk failure in your 
primary asp.
- Have some really slow drives and you want to reserve them for archive 
data only purposes so you put them into a different ASP.

I also question the use of 35gb drives.  I hear a lot about the "disk arm 
mantra".  However we increased our performance by dropping from 42 disk 
arms down to 7 when we went to a 520.  Using lower capacity drives just 
fills up slots on your 520 and forces you into buying an expansion unit 
when you need more disk space.

See also
http://archive.midrange.com/midrange-l/200408/msg00644.html

Rob Berendt