Thanks for the reply it was helpful.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Timothy Sipples
Sent: Tuesday, October 08, 2013 11:38 PM
To: [email protected]
Subject: Re: zBC12 and MES Availabilities

I added a couple words to your subject line to be more descriptive.

One has to be a little more precise here. Some MESes (Miscellaneous Equipment 
Specifications) are available for a very long time. You *can* MES a z10BC or 
even still (as I write this) a z9BC. You would MES them to a
zBC12 or z114. Those are MESes, too. In other words, capacity is available via 
MES for a very long time, but IBM might have to deliver that capacity to you in 
the form of a machine model upgrade. (Which is fine -- that works, too.)

Past IBM practice has been to offer MESes on an "N-2" basis. That is, assuming 
no change to that practice (not guaranteed), you can MES machine model X to 
machine model X+2 (two generations forward) as long as hardware MESes are 
available for X+2.

Are you asking about MESes *within* a particular model generation? Those are 
available for some period of time for machine X after the introduction of 
machine X+1. IBM will give ample advance notice of the ordering deadline. Note 
my chosen words carefully: ordering deadline. Installation date can vary a lot. 
Specifically, Capacity On Demand features may be ordered and contracted as far 
ahead as 5 years depending on your country and other factors.

--------------------------------------------------------------------------------------------------------
Timothy Sipples
GMU VCT Architect Executive (Based in Singapore)
E-Mail: [email protected]
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