Migrating from AS3 to AS4 - experiences w/ upgrade vs. reinstall?

[Nitin]

mcclnx mcc wrote:

>Don't use "upgrade".  Redhat document say very
>clearly.  It suggest re-install of AS4.  The reason is
> I/O access method change.
>
>
>--- Nitin <forumswatch at gmail.com> 說：
>
>  
>
>>Tom Hansen wrote:
>>
>>    
>>
>>>We have RHEL AS3 Update 7 and are considering
>>>      
>>>
>>upgrading to the current 
>>    
>>
>>>RHEL AS4 to gain the additional hardware support
>>>      
>>>
>>of the 2.6 kernel.
>>    
>>
>>>We would like to do the upgrade rather than
>>>      
>>>
>>reinstalling everything 
>>    
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>>>from scratch.  Is this just an empty hope, or does
>>>      
>>>
>>this stand a 
>>    
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>>>reasonable chance of success?
>>>
>>>Experiences, anyone?
>>>
>>>Thanks.
>>>
>>>
>>>      
>>>
>> An upgrade option is available to allow an upgrade
>>without requiring a 
>>full reinstall. It can be used by inserting boot
>>disk of new version and 
>>then by typing at boot prompt:
>>
>>linux upgrade
>>or
>>linux upgradeany
>>
>>This will walk you through the upgrade procedure. I
>>never gone through 
>>this but OS gives this facility.
>>
>>--Nitin
>>
>>-- 
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>>
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>  
>
Yes..It is not a recommended option but the option is available there.

--Nitin