The Data Cache System at the Belle II experiment

Sumitted to PubDB: 2017-03-11

Category: Talk, Visibility: Public

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Authors	Kihyeon Cho
Non-Belle II authors	JungHyun Kim, Sunil Ahn
Date	June 25, 2010
Belle II Number	BELLE2-TALK-CONF-2017-018
Abstract	At the begging of the Belle experiment, every extracted subset data from full-set data has been stored in “mini-data-structure-table” (mdst) format. However, these files have occupied so much disk space, which causes suffer from the lack of disk space. To solve the problem, Belle experiment composed the extraction of full-set data based on database which is postgreSQL, At the Belle II experiment, we will have 50~60 times more data (~120 PB) than that of the Belle experiment. Therefore, the Belle II experiment will have experienced a few problems for the lack of disk space and the limitation of database in gridsystem. Therefore, we propose applying the data cache system based on compressed text.
Conference	CCP2010