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The following preliminary service scenarios are envisioned:

Hosted Service Scenarios
- A) One cloud broker instance is hosted at a central location (e.g., TERENA offices), metadata is stored at the same place (i.e. inside the broker), storage data is stored in the public cloud contracted by TERENA - This is the scenario of the current pilot installation!
- B) One cloud broker instance is hosted at a central location (e.g., TERENA offices), metadata is stored at the same place (i.e. inside the broker), storage data is either stored in the public cloud or in the data storage facilities provided by NRENs participating in the pilot coordinated by TERENA.
Brokered Service Scenarios
- A) Several cloud broker instances are hosted by NRENs or end-sites, metadata is stored locally (i.e. inside the distributed brokers), storage data is stored in the public cloud that is brokered to NRENs by TERENA.
- B) Several cloud broker instances are hosted by NRENs or end-sites, metadata is stored locally (i.e. inside the distributed brokers), storage data is stored in the mix of public cloud and data storage facility of NRENs brokered and coordinated by TERENA.

TERENA Trusted Cloud Drive - service pilot > Service Delivery Scenarios > Untitled.png

Other potential scenarios may come up...

Trust Relationship Models

Trust Relationship Model

No Trust

(out of scope for TCD)

University Trust

(TERENA Franchise)

NREN Trust

(Brokered SS A and B)

TERENA Trust

(Hosted SS A and B)

Provider Trust

(out of scope for TCD)

Global Cloud Storage Provider

Cloud Storage Provider

No trust relationship with end-user
Ensure that no personal data is handled by the provider
Maintain client apps

Cloud storage (opt.)

Cloud storage (opt.) OR

NREN storage infrastructure (opt.)

Cloud Storage Provider

Trusted relationship with end-users
Keys are stored here.
Maintain client apps

TERENA

<outsourcing agreement> (opt.)

No trust delegation

Admin/clearing (opt.)

Admin/clearing &

Cloud Broker

Personal Data Controller
Encryption
Keys are stored here
Trusted relationship with end-users

<outsourcing agreement> (opt.)

Trust delegated to Cloud Provider

NREN / Data centre

<outsourcing agreement> (opt.)

No trust delegation

Storage infrastructure

Raw storage capacity
Store encrypted data blob only
No personal information leaked

Storage infrastructure &

Cloud Broker

Personal Data Controller
Encryption
Keys are stored here
Trusted relationship with end-users

Trust delegated to TERENA
Match federations with storage infrastructures (opt.)

<outsourcing agreement> (opt.)

Trust delegated to Cloud Provider

University / Institute

<outsourcing agreement> (opt.)

No trust delegation

Cloud Broker

Personal Data Controller
Encryption
Keys are stored here
Trusted relationship with end-users

Trust delegated to NREN

Trust delegated to NREN

Trust delegated to Cloud Provider

End-user

Specific client application is needed

End-to-end encryption
Keys are stored/handled here

Client might be needed for some features

POTENTIAL USE CASES

Commercial solutions are available such as:

SpiderOak
etc...

NRENs to follow this model:

BELNET
NIIF

NRENs to follow this model:

Scre/CARNet
PSNC
CESNET

Home for Homeless - TBC

TERENA

Commercial solutions are available such as:

DropBox
Box.net
PowerFolder
etc...

TERENA Storage Franchise idea

TERENA Trusted Cloud Drive API Store (for Universities/Institutes, not for End-users)

This is just a concept!

Provider	Item	AUP	SLA	Price
TERENA	Trusted Cloud Broker platform default plugins (S3, local FS) Download...	n/a	n/a	free of charge
NREN X	Storage back-end API plugin Download...	E.g., only national federation Agree (Yes/No)	Availability, MTTR, etc.	Service fee x Pay...
NREN Y	Storage back-end API plugin Download...	E.g, only TERENA countries Agree (Yes/No)	Availability, MTTR, etc.	Service fee x Pay...
Commercial Z	Storage back-end API plugin Download...	E.g, only EU countries Agree (Yes/No)	Availability, MTTR, etc.	Service fee z Pay...
Commercial W	Storage back-end API plugin Download...	E.g, global Agree (Yes/No)	Availability, MTTR, etc.	Service fee w Pay...