Lizette,

I saw your initial question on the link you provided but did not see any 
comments like the one you included below.

Regards,

Hervey


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Lizette Koehler
Sent: Tuesday, November 18, 2014 10:02 AM
To: [email protected]
Subject: Re: HSM ML2 on disk

There is a thread (and yes it is Mine) on IBM MAIN Archives 
https://listserv.ua.edu/cgi-bin/wa?A2=ind1408&L=IBM-MAIN&P=R53605&I=-3&X=FED
837FA3AD00EC1A4&d=No+Match%3BMatch%3BMatches

This discussion was on HSM and DASD ML2

One commenter provided this

While control unit storage tiering may be considered as a replacement to HSM 
processing for smaller environments, such a recommendation is an over 
simplification of the need for a comprehensive ILM strategy to properly manage 
data in middle-to-large environments.  At the various conferences that I attend 
each year, this concept was originally discussed when cu tiering was first 
introduced, but after discussions, all three vendors see the value of HSM ILM 
and cu tiering being used together to create a powerful solution as opposed 
trying to select one over another.  Each tiering technique, hardware and 
software, has strengths and weaknesses.  Using each technique to its strengths 
provides tremendous opportunity as we move forward with managing the 
significant growth of data that we are seeing.  In z/OS V2R1, DFSMS introduced 
its initial Storage Tiering solution.  This offering lays the framework for 
z/OS's long term strategy to provide various ILMs solutions so that clients can 
implement the ILM solution that works best for them.  An integral part of this 
strategy is to move away from ML1 and move toward an L0 - Ln, ML2 solution.  
Tape is still clearly the best storage media for long-term data archiving, and 
all three vendors will agree to that.  I am currently working with clients to 
move to an L0 - Ln, ML2 environment, and it is exciting to see the 
opportunities that exist by integrating software and hardware tiering into a 
single, powerful ILM strategy.  I'm more than happy to meet with clients to 
discuss the V2R1 DFSMS Storage Tiering solution and discuss the opportunities 
that it provides to exploit the strengths of the two types of tiering.


Lizette


> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[email protected]] 
> On Behalf Of Hervey Martinez
> Sent: Tuesday, November 18, 2014 7:18 AM
> To: [email protected]
> Subject: HSM ML2 on disk
>
> Just wondering if any of you out there have converted your Mainframe's 
> HSM
ML2
> from tape to disk? If so, what are the pitfalls? A quick search of 
> Google
did not yield
> much; so, just wondering if anybody has done this.
>
> Regards,
>
> Hervey
> Storage Administrator
>
>

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