I'm a little surprised by this, as the TSM macros you run to calculate the 
storage don't know (or care) about the storage device, i.e., they just report 
the uncompressed storage amount:

https://www-304.ibm.com/support/docview.wss?uid=swg21500482&wv=1

That said, if you are running TSM deduplication, that *is* reported with the 
macros, so there would be a cost saving. Was IBM talking about a discount for 
ProtecTier, maybe?

Steve

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Rick Adamson
Sent: Monday, July 16, 2012 8:44 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Moving to TSM Capacity based licensing from PVU - 
experiences

Ian,
Our company looked into it and thought it may save some $$ and at the same time 
simplify the OVERLY complex PVU license model used for TSM/IBM.

I'll start by saying to make sure you understand what TSM products are included 
in the "capacity" license proposal. From memory I don't remember the exact ones 
but it does not apply to all TSM licenses. This obviously means that the 
capacity license model may be attractive to some and unattractive to others. 
Your IBM rep should be able to clarify this.

Also, in our environment we use a Data Domain backend which as you may know 
prefers all incoming data to be uncompressed and unencrypted. Since the TSM 
servers have no knowledge of the DD processes it reports the raw storage 
numbers before compression and deduplication which negatively affected the 
capacity licensing pricing.

We opened discussions on this issue with IBM but they refused to budge or 
negotiate an adjustment for the "actual" storage used. Needless to say that 
position was not too warmly received and we 86'ed the whole discussion.

Interestingly, had we used IBM storage/deduplication on the backend they would 
use the actual storage, but no such provision for Data Domain.

Good luck....

~Rick


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Ian Smith
Sent: Monday, July 16, 2012 7:13 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Moving to TSM Capacity based licensing from PVU - 
experiences

Hi,

We are in the midst of discussions on moving to capacity-based licensing from 
the standard PVU-based method for our site. We have a large number of clients ( 
licensed via TSM-EE, TDP agents, and on client-device basis
) and around 1PB of primary pool data. As I understand it, there is no 
published metric for the conversion from PVU to per TB licensing so I would be 
really interested and grateful if anyone would like to share their experiences 
of that conversion in a private email to me. 

Many thanks in advance.
Ian Smith
Oxford University
England