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Sue really covers this well here but a couple other notes.
First there are features in the disk units that IBM i exploits and that
is IBM owned code. If those features are not there that's a problem,
hence the support for only specific VPD as Sue indicated.
Second, when is the last time you updated the firmware of the drives,
RAID cards, SAS back-planes, etc on your IBM i Partitions? What's that,
you say "Never?" That is incorrect. Potentially you do this with every
PTF! You do PTFs you IPL your machine sees a drive with down level
firmware, it updates said firmware, you sip your coffee. It's a great
deal!
(Side note: This is why 5887 drawers are supported only in Mode 1
with IBM i. See if you can figure out why... :-) )
Years ago there we some vendors selling 'plug compatible drives' for
then 'AS/400' machines. Customer upgrades to newest release (seem to
recall V4R4) and craters the machine. Why? The new release updated the
firmware on those drives. Since they were not IBM Drives the new
firmware destroyed them. The vendor merely said: "We never said we were
compatible with the NEXT release, only the one you were running when you
purchased them!"
- Larry "DrFranken" Bolhuis
www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.
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