Re: moving to linux

You and your purchasing/asset mgmt staff should partner on creating a formal 
RFP document sent to all of the major vendors (including SUN, which now markets 
Intel-based machines with whatever OS you wish to run, including an open 
version of Solaris.)  This request for proposal should include a method for 
migrating to the new environment with comparible software, and the costs 
involved.  

Your question sounds technical, and a good systems engineer probably knows a 
lot about the hardware and nomenclature already, but so many new offerings from 
vendors abound, and are released almost daily, so getting to hear the technical 
side of their proposals is always worthwhile.  It's almost impossible to say, 
in advance, what the right number of processors or configuration from a given 
vendor would be without a comparison and test.   You may also ask that the RFP 
include a hardware trial at nominal cost.   

An Oracle rep can also provide an abundance of knowledge to the process, 
especially since they now market hardware systems such as exodata and exodata-2 
in concert with the major vendors.   SAN Disks, HBA switches and other 
network-related hardware do make the technical selection process more 
complicated.  This is why I recommend your RFP include a complete 
recommendation from each vendor.  They will occasionally offer to build a 
system using their own, or their competitors offerings for such components to 
make a competitive bid.  

By the way, there's no such thing as "linux hardware" anymore, in the strictest 
sense.  This same hardware can run Windows and Solaris and other flavors of 
unix/linux.  Don't forget third party apps and productivity tools must also be 
certified for whatever environment you select.  Many times when working with 
clients running on Solaris and more traditional unix variants, you find you 
must upgrade these as well when moving to a new OS, so this upgrade activity 
can greatly complicate the process, to the point of involving application 
coding changes.  It can also add significantly to the cost of the migration.  
In some cases, older software is not even supported by vendors.  You'll have to 
consider suitable replacements in such cases.  

This also implies that your application staff should also already be involved 
in the process.  You wouldn't want to spring such issues on them after a 
selection is made.  

You are certainly right that this is a complicated task, so good luck!




----- Original Message -----
From: "Sam K" <dbinsight@xxxxxxxxx>
To: oracle-l@xxxxxxxxxxxxx
Sent: Tuesday, December 1, 2009 5:07:39 AM GMT -06:00 US/Canada Central
Subject: moving to linux

Hi all

   How do you go about doing an impact analysis for a Solaris to
Linux migration for Oracle products
couple of tasks which come into mind immediately are

certification of equivalent products and 3rd party products on linux platform
migration strategy
hardware equivalence??  - how do you go about this, For ex. how to go
about finding a equivalent server for say a Sun SPARC Enterprise M5000
Server on a Dell or HP server offering?
for  hardware equivalence other than CPU and memory should we look
into anything more like HBA's,switches etc...??
For CPU's should we go  for equivalent number? for ex if we have a 4
quad-cores on Solaris
should we go for similar configuration on a linux hardware?
Did anyone move to a RAC configuration as part of Linux migration from
a non-Rac environment, if so
what were the reasons? Did Hardware/server sizing equivalent play a role in it.

I would like to hear your thoughts on the above and any additional
info we will need to analyze
as part of the process

TIA,Sam
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Michael Fontana 

Sr. Technical Consultant 

Enkitec M: 214.912.3709 

enkitec

oracle_certified_partner




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