Page 272 - Big data - Concept and application for telecommunications

5 Big data - Concept and application for telecommunications

(7) It is recommended that CSP:DMP provide DSF data migration to available DSF local storage for
resilience and cost efficiency of the storage space.
NOTE 5 – The data migration for the resilience and cost efficiency of the data storage space is
automatically performed without user intervention or recognition.
(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.

264 Network and infrastructure