STORAGE APPARATUS AND ITS DATA PROCESSING METHOD

WIPO Patent Application WO/2012/137252

A1

Data conversion processing for converting access target data into data of a different block size is executed without degradation of data input/output processing performance. A first controller manages its own load by associating it with LUs, which are access targets of an access requester; and if the first controller receives an access request from the access requester, it judges whether its load exceeds a threshold or not; and if its load exceeds the threshold, the first controller executes first data conversion processing for converting data relating to an access target LU(s) of the access requester from a first block size into a second block size or second data conversion processing for converting the data from the second block size into the first block size; and if its load is equal to or less than the threshold, the first controller gives a command to a second controller to execute the first data conversion processing or the second data conversion processing and the second controller executes the first data conversion processing or the second data conversion processing based on the command from the first controller.

FUKUGUCHI HITOSHI (JP)
KAWARASAKI MASAHIDE (JP)
NISHIMOTO AKIRA (JP)

PCT/JP2011/002039

October 11, 2012

April 06, 2011

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HITACHI LTD (JP)
FUKUGUCHI HITOSHI (JP)
KAWARASAKI MASAHIDE (JP)
NISHIMOTO AKIRA (JP)

G06F3/06

US20090138672A1	2009-05-28
US20100250845A1	2010-09-30
US7636801B1	2009-12-22
EP1357465A2	2003-10-29
JP2009129201A	2009-06-11
JP2006079380A	2006-03-23
JP2006195851A	2006-07-27

OHGA, Shinji et al. (3rd Floor Shiodome Building, 1-2-20, Kaigan, Minato-k, Tokyo 22, JP)

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