DATA ACCESS METHOD AND STORAGE ARRAY

WIPO Patent Application WO/2019/127490

A1

A data access method comprises: a processor of a storage array searching, after receiving a first data access request sent by a host, for a logical page address of a first large-page logical page corresponding to a logical address of data requested by the data access request, the first large-page logical page belonging to a large-page logical block of a first mixed-page logical block; the processor searching a conversion table corresponding to the first mixed-page logical block for a first data mark corresponding to the first large-page logical page; if the first data mark is a small-page mark, the processor acquiring a small-page index table according to an address of the small-page index table corresponding to the first large-page logical page recorded in the conversion table, and determining, in the small-page index table, a logical page address of a small-page logical page corresponding to the logical page address of the first large-page logical page, wherein storage space of a second SSD corresponding to the logical page address of the small-page logical page is used to store data migrated from storage space of a first SSD corresponding to the logical page address of the first large-page logical page; and the processor acquiring the requested data from the second SSD according to the logical page address of the small-page logical page.

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HU PAN (CN)

PCT/CN2017/120204

July 04, 2019

December 29, 2017

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HUAWEI TECH CO LTD (CN)

G06F3/06

WO2013097618A1

2013-07-04

CN105808157A	2016-07-27
CN105988727A	2016-10-05
CN106326132A	2017-01-11

See also references of EP 3671423A4

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