Patent application number | Description | Published |
20120089774 | METHOD AND SYSTEM FOR MITIGATING ADJACENT TRACK ERASURE IN HARD DISK DRIVES - A method, system, and computer program product for mitigating adjacent track erasures in hard disks, includes: determining input/output (I/O) characteristics for a plurality of blocks on a hard disk; assigning the plurality of blocks to a plurality of categories of I/O characteristics by the processor; and clustering content of the blocks assigned to the same category in one or more continuous tracks on the hard disk. Each block is assigned to one category. Blocks with similar I/O characteristics are clustered on one or more continuous tracks. By performing this clustering, blocks with a high number of I/O operations are grouped and stored on fewer tracks than if they were scattered across numerous tracks. This reduces the number of tracks experiencing a high number of I/O operations, and in turn, the amount of refreshing of adjacent tracks is reduced. | 04-12-2012 |
20120113786 | SMART OPTIMIZATION OF TRACKS FOR CLOUD COMPUTING - Optimization of tracks on a hard disk includes: determining I/O characteristics for data clusters to be stored on the hard disk; generating a set of solutions for each possible placement configuration; for each solution, calculating a plurality of cost functions using the I/O characteristics for the plurality of data clusters; for each solution, calculating a membership value using the cost function values; for each solution, calculating a fitness value using the membership value; retaining the solutions with the fitness value greater than a predetermined threshold; determining whether at least one stopping condition has been met; if not, adding new solutions to the retained solutions to generate the next set of solutions; and repeating the calculating the membership value, the calculating the fitness value, and the retaining the solutions with the fitness value greater than the predetermined threshold until at least one stopping condition has been met. | 05-10-2012 |
20120226874 | CHARACTERIZATION AND OPTIMIZATION OF TRACKS ON DISKS - Embodiment of the invention related to characterization and optimization of tracks on a disk, magnetic or optical by determining an input/output (I/O) characteristics for a plurality of blocks on a disk by a processor, wherein the characteristics comprise at least one of a data size or data type or an association between the data files, and determining a plurality of parameters affecting operation performed on the disk for placement of the plurality of data clusters. | 09-06-2012 |
20130293980 | METHOD AND SYSTEM FOR MITIGATING ADJACENT TRACK ERASURE IN HARD DISK DRIVES - A method, system, and computer program product for mitigating adjacent track erasures in hard disks, includes: determining input/output (I/O) characteristics for a plurality of blocks on a hard disk; assigning the plurality of blocks to a plurality of categories of I/O characteristics by the processor; and clustering content of the blocks assigned to the same category in one or more continuous tracks on the hard disk. Each block is assigned to one category. Blocks with similar I/O characteristics are clustered on one or more continuous tracks. By performing this clustering, blocks with a high number of I/O operations are grouped and stored on fewer tracks than if they were scattered across numerous tracks. This reduces the number of tracks experiencing a high number of I/O operations, and in turn, the amount of refreshing of adjacent tracks is reduced. | 11-07-2013 |
20130293981 | SMART OPTIMIZATION OF TRACKS FOR CLOUD COMPUTING - Optimization of tracks on a hard disk includes: determining I/O characteristics for data clusters to be stored on the hard disk; generating a set of solutions for each possible placement configuration; for each solution, calculating a plurality of cost functions using the I/O characteristics for the plurality of data clusters; for each solution, calculating a membership value using the cost function values; for each solution, calculating a fitness value using the membership value; retaining the solutions with the fitness value greater than a predetermined threshold; determining whether at least one stopping condition has been met; if not, adding new solutions to the retained solutions to generate the next set of solutions; and repeating the calculating the membership value, the calculating the fitness value, and the retaining the solutions with the fitness value greater than the predetermined threshold until at least one stopping condition has been met. | 11-07-2013 |
20140289245 | OPTIMIZING A CLUSTERED VIRTUAL COMPUTING ENVIRONMENT - Exemplary embodiments of the present invention disclose a method, computer program product, and system for optimizing a clustered virtual computing environment. In exemplary embodiments, performance attributes are identified for a set of operating devices within the clustered virtual computing environment. Historical data of the identified performance attributes is obtained to create a historical data repository. A rulebase is developed using the historical data repository and input from user. A combined correlation pattern repository is generated using a first correlation pattern, a second correlation pattern and a scale-time invariant weight fraction. | 09-25-2014 |
20140380174 | OPTIMIZING A CLUSTERED VIRTUAL COMPUTING ENVIRONMENT - Exemplary embodiments of the present invention disclose a method, computer program product, and system for optimizing a clustered virtual computing environment. In exemplary embodiments, performance attributes are identified for a set of operating devices within the clustered virtual computing environment. Historical data of the identified performance attributes is obtained to create a historical data repository. A rulebase is developed using the historical data repository and input from user. A combined correlation pattern repository is generated using a first correlation pattern, a second correlation pattern and a scale-time invariant weight fraction. | 12-25-2014 |
20150032283 | DATA CENTER COOLING - Embodiments of the invention provide techniques of monitoring and controlling temperature in a data center having a plurality of systems. Operating parameters of one or more cooling devices in the data center may be dynamically adjusted based on characteristics of the data center. An associated method may include monitoring in real time temperature and data flow patterns with respect to the systems in a zone of the data center, computing an optimal temperature based on the real time data and historical data collected in a repository, and activating one or more cooling devices in the zone upon determining that the temperature in the zone exceeds a predefined threshold. | 01-29-2015 |