Page 131 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

(8) It is required that the CSP:DMP provide the validation of DSF data on data operation to check the
data integrity.
(9) It is required that CSP:DMP support CSC:CSU's data consistency for replicated DSF data.
NOTE 6 – The data consistency means that CSP:DMP correctly backup current DSF data in order to recover
CSC:CSU's data on storage failure.
(10) It is required that CSP:DMP support CSC:CSU's data transparency.
NOTE 7 – The data transparency means to access CSC:CSU's data without knowing location.

8.3 Storage federation requirements
(1) It is recommended that CSP:SFP provide the performance information of DSF local storage from
storage management metadata.
NOTE 1 – Performance information are read/write I/O speed, network bandwidth, storage capacity, storage
types, etc.
(2) It is recommended that CSP:SFP provide virtual storage pool optimization considering the
performance of DSF local storage.

NOTE 2 – Virtual storage pool optimization includes storage mirroring, storage prioritization, CSC:CSU's access
geo-location and their combinations.
(3) It is recommended that CSP:SFP provide single virtual volume optimization based on CSC:CSU's
purpose.
NOTE 3 – Single virtual volume optimization include storage size, data safety, storage performance, mobility
of the usage environment and their combinations.
(4) It is required that CSP:SFP provide the configuration of single virtual volume from CSC:CSU requests.

(5) It is required that CSP:SFP provide a read/write cache to access data.
NOTE 4 – The read/write cache enables to enhance the performance of the storage and the device storing the
data is used by various devices for fast cache operation.
NOTE 5 – The various devices for fast cache are main memory, RAM based disk, SSD, etc.
(6) It is recommended that CSP:SFP provide hierarchical cache management using cache multi-tiering.

NOTE 6 – Cache multi-tiering means that for the high-speed access, cache hierarchy is extended to various
devices for fast caching.
NOTE 7 – For capacity limit, if a main-memory cache area is exhausted, it is automatically expanded to a RAM
based disk cache and expanded to SSD cache.
NOTE 8 – When CSC:CSU performs the data operation, the data operation is performed in the memory area
in advance for fast write response.
(7) It is required that CSP:SFP provide the backup of global registry for high availability.

NOTE 9 – The backup of the global registry is synchronized with most recently updated CSC:CSU's data.
(8) It is recommended that CSP:SFP provide in-parallel access to DSF local storage.
(9) It is required that CSP:SFP provide the registration of CSC:CSU's credentials to a DSF local storage.
(10) It is recommended that CSP:SFP support monitoring the performance information of DSF local
storage.
(11) It is required that CSP:SFP provide the management of DSF local storage interface.
(12) It is recommended that CSP:SFP support access to the secured storage interface for DSF local
storage.
(13) It is required that CSP:SFP provide the storage operation for DSF local storage.
NOTE 10 – Storage operation for DSF local storage includes create, delete, scaling, partitioning and checking
volume, etc.).
(14) It is required that CSP:SFP provide scaling of single virtual volume on CSC:CSU demand.

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