It's often said that there's no stupid question, but I think I'm about
to test this adage. I've got my cable set between the UPS and the 720
(8202-E4C). I got the CPI0962 (UPS now attached) message. I don't have
a UPS power handling program written yet, so I want to set QUPSDLYTIM to
a value that will allow the machine to write main store to disk before
crashing. I look at
http://pic.dhe.ibm.com/infocenter/iseries/v7r1m0/index.jsp?topic=%2Frzahr%2Frzahrdlytimco.htm
(Determining the value of QUPSDLYTIM) and I can see that the value is
heavily dependent on the number of disk arms and main storage.
WRKSYSSTS and a calculator tell me I have the 32GB we paid for :-)
WRKDSKSTS tells me I have 8 198C disk units and 12 19B0 disk units. If
that's 20 arms, I'm hosed - the table says it'll take (worst case) 58
minutes to write 32GB RAM to disk (!) [1]
And so, I don't think those 20 disk units equal 20 disk arms but my
Google-fu has failed me in finding a conversion table. I tried Power
720, 8202-E4C, 198C, 19B0. Is 'disk arm' an imaginary unit of measure
like CPW?
--buck
[1] These numbers seem crazy even if worst case. It's really going to
take an hour to write 32GB of data from RAM to disk?
midrange.com
