# US 2019/0377499 A1 · Optimized performance through leveraging appropriate disk sectors for defragmentation in an erasure coded heterogeneous object storage cloud > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0377499 A1 - Document ID: US20190377499A1 - Status: Published application - Kind: A1 - Application number: 16/546,816 - Filed: 2019-08-21 - Published: 2019-12-12 - Earliest claimed: 2017-12-01 - Assignees: International Business Machines Corporation - Applicants: International Business Machines Corporation - Inventors: Duane Baldwin; Abhishek Dave; Sasikanth Eda; Nataraj Nagaratnam; John T. Olson; Sandeep R. Patil - Web page: https://patentgrep.com/patent/US20190377499A1 ## CPC - G06F 3/0608: {Saving storage space on storage systems} - G06F 3/061: {Improving I/O performance} - G06F 3/0611: {in relation to response time} - G06F 3/064: {Management of blocks} - G06F 3/0661: {Format or protocol conversion arrangements} - G06F 3/067: {Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]} - G06F 3/0676: {Magnetic disk device} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An embodiment of the invention may include a method, computer program product and system for optimizing data defragmentation. The embodiment may include collecting details related to contiguous storage space available on a disk drive. The embodiment may include identifying a type of object storage implementation utilized on the disk drive. The type of object storage implementation is based on how an object is stored within the disk drive. The embodiment may include identifying an important component of the object. The important component of the object is determined by a frequency of access. The embodiment may include identifying a non-important component of the object. The non-important component of the object is determined by a frequency of access. The embodiment may include moving the important component to an outer sector of the disk drive. The embodiment may include moving the non-important component to an inner sector of the disk drive. ## Claims ### Claim 1 A method for optimizing data defragmentation, the method comprising: collecting details related to contiguous storage space available on a disk drive, identifying a type of object storage implementation utilized on the disk drive, wherein the type of object storage implementation is based on how an object is stored within the disk drive; identifying an important component of the object, wherein the important component of the object is determined by a frequency of access of the important component; identifying a non-important component of the object, wherein the non-important component of the object is determined by a frequency of access of the non-important component; moving the important component of the object to an outer sector of the disk drive, wherein the outer sector of the disk drive comprises available contiguous space sufficient to store the important component in its entirety; and moving the non-important component of the object to an inner sector of the disk drive. ### Claim 2 (depends on 1) The method of claim 1, wherein identifying the important component of the object comprises determining a most frequently accessed component of the object, and wherein the determined most frequently accessed component of the object is identified as the important component of the object. ### Claim 3 (depends on 1) The method of claim 1, wherein identifying the non-important component of the object comprises determining a least frequently accessed component of the object, and wherein the determined least frequently accessed component of the object is identified as the non-important component of the object. ### Claim 4 (depends on 1) The method of claim 1, wherein identifying the type of object storage implementation utilized on the disk drive comprises determining whether the object is stored together with, or separately, from an element selected from the group consisting of metadata corresponding to the object and a durability file corresponding to the object. ### Claim 5 (depends on 4) The method of claim 4, wherein the durability file corresponding to the object comprises a hash value for the object and is used to verify the integrity of the object. ### Claim 6 (depends on 1) The method of claim 1, wherein the important component of the object is selected from the group consisting of fixed data associated with the object, metadata associated with the object, and a durability file associated with the object. ### Claim 7 (depends on 1) The method of claim 1, wherein the details related to contiguous storage space available on a disk drive comprise an element selected from the group consisting of disk information on block size, a number of contiguous blocks, sector details, an inner sector classification, and outer sector classification. ### Claim 8 A computer program product for optimizing data defragmentation, the computer program product comprising: one or more computer-readable tangible storage devices and program instructions stored on at least one of the one or more computer-readable tangible storage devices, the program instructions comprising: program instructions to collect details related to contiguous storage space available on a disk drive; program instructions to identify a type of object storage implementation utilized on the disk drive, wherein the type of object storage implementation is based on how an object is stored within the disk drive; program instructions to identify an important component of the object, wherein the important component of the object is determined by a frequency of access of the important component; program instructions to identify a non-important component of the object, wherein the non-important component of the object is determined by a frequency of access of the non-important component; program instructions to move the important component of the object to an outer sector of the disk drive, wherein the outer sector of the disk drive comprises available contiguous space sufficient to store the important component in its entirety; and program instructions to move the non-important component of the object to an inner sector of the disk drive. ### Claim 9 (depends on 8) The computer program product of claim 8, wherein program instructions to identify the important component of the object comprises program instructions to determine a most frequently accessed component of the object, and wherein the determined most frequently accessed component of the object is identified as the important component of the object. ### Claim 10 (depends on 8) The computer program product of claim 8, wherein program instructions to identify the non-important component of the object comprises program instructions to determine a least frequently accessed component of the object, and wherein the determined least frequently accessed component of the object is identified as the non-important component of the object. ### Claim 11 (depends on 8) The computer program product of claim 8, wherein program instructions to identify the type of object storage implementation utilized on the disk drive comprises program instructions to determine whether the object is stored together with, or separately, from an element selected from the group consisting of metadata corresponding to the object and a durability file corresponding to the object. ### Claim 12 (depends on 11) The computer program product of claim 11, wherein the durability file corresponding to the object comprises a hash value for the object and is used to verify the integrity of the object. ### Claim 13 (depends on 8) The computer program product of claim 8, wherein the important component of the object is selected from the group consisting of fixed data associated with the object, metadata associated with the object, and a durability file associated with the object. ### Claim 14 (depends on 8) The computer program product of claim 8, wherein the details related to contiguous storage space available on a disk drive comprise an element selected from the group consisting of disk information on block size, a number of contiguous blocks, sector details, an inner sector classification, and outer sector classification. ### Claim 15 A computer system for optimizing data defragmentation, the computer system comprising: one or more processors, one or more computer-readable memories, one or more computer-readable tangible storage devices, and program instructions stored on at least one of the one or more computer-readable tangible storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, the program instructions comprising: program instructions to collect details related to contiguous storage space available on a disk drive; program instructions to identify a type of object storage implementation utilized on the disk drive, wherein the type of object storage implementation is based on how an object is stored within the disk drive; program instructions to identify an important component of the object, wherein the important component of the object is determined by a frequency of access of the important component; program instructions to identify a non-important component of the object, wherein the non-important component of the object is determined by a frequency of access of the non-important component; program instructions to move the important component of the object to an outer sector of the disk drive, wherein the outer sector of the disk drive comprises available contiguous space sufficient to store the important component in its entirety; and program instructions to move the non-important component of the object to an inner sector of the disk drive. ### Claim 16 (depends on 15) The computer system of claim 15, wherein program instructions to identify the important component of the object comprises program instructions to determine a most frequently accessed component of the object, and wherein the determined most frequently accessed component of the object is identified as the important component of the object. ### Claim 17 (depends on 15) The computer system of claim 15, wherein program instructions to identify the non-important component of the object comprises program instructions to determine a least frequently accessed component of the object, and wherein the determined least frequently accessed component of the object is identified as the non-important component of the object. ### Claim 18 (depends on 15) The computer system of claim 15, wherein program instructions to identify the type of object storage implementation utilized on the disk drive comprises program instructions to determine whether the object is stored together with, or separately, from an element selected from the group consisting of metadata corresponding to the object and a durability file corresponding to the object. ### Claim 19 (depends on 18) The computer system of claim 18, wherein the durability file corresponding to the object comprises a hash value for the object and is used to verify the integrity of the object. ### Claim 20 (depends on 15) The computer system of claim 15, wherein the important component of the object is selected from the group consisting of fixed data associated with the object, metadata associated with the object, and a durability file associated with the object.