Page 134 - Cloud computing: From paradigm to operation

1 Framework and requirements for cloud computing

I.2 Data sharing between customers

Title Data sharing between customers
Description In this scenario, the DSF service customer #1 stored file A~D with data sharing mode policy
setting. The file A is non-sharing mode, the file B is read-only data sharing mode, the file C is
over-writable data sharing mode and the file D is replicable data sharing mode. The other DSF
service customer #2 uses file A~D with data sharing policy set by DSF service customer #1.
DSF service customer #2 cannot access file A because of non-sharing mode policy setting and
DSF service customer #2 can read file B but it is not writable. In file C case, DSF service
customer #2 can overwrite it and store it with changes. In file D case, by a replication request
by DSF service customer #2, the original file D is preserved and a new file E is generated and
stored to DSF service customer #2's single virtual volume.
Role/sub-role DSF service provider (CSP:DMP)
DSF service customer (CSC:CSU)
Figure (optional)

Pre-conditions
(optional)
Post-conditions
(optional)
Derived – Clause 8.1 requirement (2)
requirements

I.3 Multiple storage types and access mechanisms for data access
Title Multiple storage types and access mechanisms for data access
Description In this scenario, a DSF service customer requests a variety of service interfaces and storage
types from a DSF service provider. Also, the DSF service provider provides service interfaces to
the DSF service customer with the corresponding access mechanisms.
Role/Sub-role DSF service customer (CSC:CSU)
DSF service provider (CSP:SFP, CSP:DMP)

126