Abstract: 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.

Abstract: An index node (inode) allocation method, a corresponding data processing device and a corresponding computer-readable medium are provided. The method is applicable to a file system and includes the following steps: allocating a range including a plurality of consecutive inodes to a directory in the file system when a directory order mode is already activated, wherein files in the directory are sorted according to hash values of the files; dividing the range of inodes into a plurality of sub-regions; and when a new file is created in the directory, selecting one of the sub-regions according to a hash value of the new file, so as to allocate an inode in the selected sub-region to the new file.

Abstract: 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.

Abstract: 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.