Model 40S DASD -- 6502 IOP

I have a 9402-40S currently running V5R1. It's fully packed with drives, mostly 
in the integrated expansion unit; but the drives are all 2GB units since that 
was all that could be handled by a 40S back in its day.

In running through system handbooks for various OS/400 releases, I'm getting 
confusing info on what's possible. For clear, explicit wording, the best I can 
find is in a handbook for V3R7. That reference lists the 2GB drives and doesn't 
seem to include anything that gives hope that larger capacity drives are likely.

But up around V4R2, as the 9402-40S has less direct coverage, there's 
additional wording about the 6502 IOP in general which is what's been installed 
into this 40S. It says the 6502 can handle up to the 8GB drives without any 
clarity on whether or not it depends on what the 6502 is installed in.

Does anyone out there know what a 6502 in a 40S can handle?

If larger drives can work, I'd want first to remove a couple of the 2GB drives 
from the configuration and maybe put a couple 4GB (or 8?) drives in user ASPs. 
These would be the targets for perhaps journal receivers as well as some 
on-line archiving of stuff that's not required in the system ASP but handy to 
keep close -- anything from some older source files to daily SAVSECDTA/SAVCFG.

Once enough cleanup is done, it might then be possible to get away from the 
older 2GB drives altogether. The used-equipment market can supply plenty of 
cheap replacements -- when part numbers are right.

Thanks much for any info.

Tom Liotta

-- 
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788 x313
Fax    253-872-7904
http://www.powertech.com


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