RE: RE: Operating System Levels

I thought it was N-1, N+1 assuming the HW could support all releases.  (For 
example, an 820 with V5R2 min requirement could do a primary V5R3 and 
secondaries V5R2 and V5R4)  Also that it was a good idea, but not required, 
that the OS on the primary is the highest of the whole box.
 
Haven't heard of the N-2, anyone have a link to docs showing that info?  I'd 
think it would be a rarity to be running N-2 on the same system, it seems 
pretty difficult to get a 3-level OS span on one platform with how often the OS 
is updated and the system minimum OS requirements change.
 
Someone correct me if I'm off - I recently woke up!
 
jch
 

________________________________

From: midrange-l-bounces@xxxxxxxxxxxx on behalf of qsrvbas@xxxxxxxxxxxx
Sent: Thu 3/2/2006 6:36 PM
To: midrange-l@xxxxxxxxxxxx
Subject: RE: RE: Operating System Levels



midrange-l-request@xxxxxxxxxxxx wrote:

>   9. RE: Operating System Levels (Paul E. Fenstermacher)
>
>Yes.  The requirement is N - 2.
>
>-----Original Message-----
>
>Someone told me that your primary partition needed to be at your most
>current OS level.  I do not believe this to be true.  If I have a
>iSeries
>with 3 partitions, can I have the primary at V5R2, with my other 2
>partitions at V5R3?


Primary need not be most current. Secondaries are often created _specifically_ 
in order to host a new release in a test environment before upgrading the 
primary. This is one of the selling points of LPARs from the beginning.

As mentioned above, one requirement is the N-2 limit. One additional 
requirement is that the hardware must support the release. E.g., a new system 
that requires V5R4 has no current alternatives.

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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