Qnap Systems, Inc.

Tsu-Yu Wu

An access control list (ACL) management method is provided. The ACL management method is used in a file system and includes: storing an ACL pattern, where the ACL pattern corresponds to a subtree of a directory tree in the file system and includes a root access control list (RACL), the ACL of the root node of the subtree is the RACL, the ACL of each non-root directory of the subtree is the same inherited directory access control list (DACL) generated according to the RACL, and the ACL of each non-root file of the subtree is the same inherited file access control list (FACL) generated according to the RACL. A data storage device and a computer-readable medium for executing the ACL management method are also provided.

Access control list management method, data storage device and computer-readable medium

A method of increasing operational life time of SSD RAID and a storage equipment using same, the method including: configuring a data storage device to have a plurality of storage areas, each storage area including a plurality of stripes, and each stripe including an individual block of a plurality of solid state disks, where at least one block in each stripe is a check bit block, the other blocks are data blocks; and configuring two neighboring stripes in each storage area to form a composite stripe according to a plurality of index combinations in a mapping table, where the composite stripe includes two neighboring blocks in each solid state disk, and the composite stripe is divided into a stripe writing area and an empty stripe area, so that each solid state disk in each storage area has a reserved space.

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Taipei, Taiwan

Tsu-Yu Wu