Not sure exactly what you're looking for. If you could clarify further the scenario, that would be helpful also to be able to provide you a more concrete answer.
The rules for service provider infrastructure, so far, are the same as for customers. There is though a specific SAP certification for "SAP HANA service providers", which enables these companies to provide customers with SAP licenses in a subscription mode.
But, when you talk about shared infrastructures between a customer organization and a service provider, probably what you're saying is that you're planning to operate in a Hybrid Cloud model.
That being the case, for production systems, being on your own private cloud or on the service provider infrastructure, you'll need certified infrastructures in order to have support from SAP.
In regards to non-productive systems, remember that SAP relaxed the infrastructure requirements for non-production and no longer requires certified infrastructures. The servers still need to be from the SAP list of certified servers (to ensure compatibility with the selected versions of Linux and its packages, etc), but you have a lot more span of choice here. And service providers use this also to be able to provide more economic options to customers in support of all the non-production requirements.
Let me know if this was what you're looking for, ok?
While this discussion here is about TDI, my question is how do you position TDI compared to appliance model? For example, if appliance model is seen as cheaper within 3 years compared to costs of TDI solution, why customer would go for TDI? Surely, one may argue that you get to use existing resources (if you have those), but you can also see the other side which says they can save on those resources. Obviously feature set of TDI would need to prevail to be of critical importance and something that SAP or appliance supplier would not have on roadmap within next HW refresh cycle for TDI solution, but I keep wondering is it really so. Of course, there are other drivers like how healthy your internal IT structure is (I assume those less healthier will probably drive SAP folks more towards appliance model). How do you deal with such challenges? What is the crucial benefit of TDI that would drive someone to consider it?
All your considerations may be relevant when you think only about SAP HANA and about CAPEX. In that perspective, purely from a CAPEX perspective, there will be no cheaper solution than a server with internal disks.
Then I would invite you to broaden your reasoning with the following aspects:
These are just a few examples, but the point is that the benefits here go beyond just a "SAP HANA discussion" into an IT strategy, architecture and operations discussion. When you expand the perspective, then the benefits of being able to leverage those standards across the datacenter for SAP HANA as well, are a no brainer.
Let me invite you as well to have a look at the presentation we did recently for SAPinsider. The link to that webminar and other materials specific to the "business case for SAP HANA TDI" can be found at: https://community.emc.com/docs/DOC-49035
So, the appliance vs TDI discussion for me makes no sense on a "feature vs feature" discussion, as this is all about datacenter strategy, operations simplification, enabling simpler change and better business agility, which in the end will drive a lower TCO.
One final comment as EMC is best known in the data storage market: if you only look at disk latency and acquisition cost, there would be no market for shared storage in the world, as internal disks in servers provide a lower acquisition cost and a lower latency than any SAN based solution. So why companies have made this a standard across their datacenters in the world? Because it enables simpler protection of data, streamlines replication and DR mechanisms, simpler lifecycle management, simpler scalability, simpler change... and many other benefits that come from the fact that the only guaranteed thing an organization have in these days of globalized economies, is that change will happen.
Note that my perspective comes from the experience with large global organizations with a mixed portfolio of applications in the datacenter, being SAP HANA just one, and where being agile is today one of their major challenges, building silos in the datacenter doesn't help their cause.
Again, please review our webminar for SAPinsider and our whitepaper with the "Business case for SAP HANA TDI", and let us know if this answers your questions, ok?
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