AS/400 - iSeries uptime statistics

[Neil Palmer/DPS <neilp@xxxxxxxxxxx>]

Does anyone have any links (independent research, or even IBM backed) 
stating average uptime ratings for AS/400 - iSeries?  Wasn't it something 
like 99.97% for a single processor image?  Something contrasting that with 
numbers for a WinNt or Win2000 Server &/or 'nix boxes would also be very 
useful (I recall one IBM presentation showing something like 99.9% uptime 
for NT, and showing how many days a year that meant it was down, vs. how 
many minutes for an AS/400).  I believe IBM at one point published 
something showing that a single AS/400 - iSeries system had a higher 
uptime rating that a 390 mainframe (one not in a Sysplex).

I've found some links, but could use some additional ones.

...Neil