Patent application number | Description | Published |
20090245519 | RENEWAL MANAGEMENT FOR DATA ITEMS - A system, method apparatus, and computer readable medium for managing renewal of a dynamic set of data items. Each data item has an associated renewal deadline, in a data item management system. A renewal schedule allocates to each data item a renewal interval for renewal of the data item. On addition of a new data item, if a potential renewal interval having a duration required for renewal of the data item, and having an ending at the renewal deadline for that item does not overlap a time period in the schedule during which the system is busy, the renewal schedule is automatically updated by allocating the potential renewal interval to the new data item. If the potential renewal interval does overlap a busy period, the renewal schedule is automatically updated by selecting an earlier renewal interval for at least one data item in the set. | 10-01-2009 |
20120079351 | Systems and Methods for Memory Devices - A method for writing data to a memory array includes receiving a write request including data from a processor, compressing the data, assigning a page strength to the compressed data, the page strength defined by a compression ratio used to compress the data, generating a parity data block associated with the compressed data, and saving the compressed data and the parity data block in a page of the memory array, the page of the memory array having a page strength corresponding to the assigned page strength of the compressed data. | 03-29-2012 |
20130111106 | PROMOTION OF PARTIAL DATA SEGMENTS IN FLASH CACHE | 05-02-2013 |
20130111131 | DYNAMICALLY ADJUSTED THRESHOLD FOR POPULATION OF SECONDARY CACHE | 05-02-2013 |
20130111133 | DYNAMICALLY ADJUSTED THRESHOLD FOR POPULATION OF SECONDARY CACHE | 05-02-2013 |
20130111134 | MANAGEMENT OF PARTIAL DATA SEGMENTS IN DUAL CACHE SYSTEMS | 05-02-2013 |
20130111146 | SELECTIVE POPULATION OF SECONDARY CACHE EMPLOYING HEAT METRICS | 05-02-2013 |
20130111160 | SELECTIVE SPACE RECLAMATION OF DATA STORAGE MEMORY EMPLOYING HEAT AND RELOCATION METRICS | 05-02-2013 |
20130185512 | MANAGEMENT OF PARTIAL DATA SEGMENTS IN DUAL CACHE SYSTEMS - For movement of partial data segments within a computing storage environment having lower and higher levels of cache by a processor, a whole data segment containing one of the partial data segments is promoted to both the lower and higher levels of cache. Requested data of the whole data segment is split and positioned at a Most Recently Used (MRU) portion of a demotion queue of the higher level of cache. Unrequested data of the whole data segment is split and positioned at a Least Recently Used (LRU) portion of the demotion queue of the higher level of cache. The unrequested data is pinned in place until a write of the whole data segment to the lower level of cache completes. | 07-18-2013 |
20130205077 | PROMOTION OF PARTIAL DATA SEGMENTS IN FLASH CACHE - For efficient track destage in secondary storage in a more effective manner, for temporal bits employed with sequential bits for controlling the timing for destaging the track in a primary storage, the temporal bits and sequential bits are transferred from the primary storage to the secondary storage. The temporal bits are allowed to age on the secondary storage. | 08-08-2013 |
20130232294 | ADAPTIVE CACHE PROMOTIONS IN A TWO LEVEL CACHING SYSTEM - Provided are a computer program product, system, and method for managing data in a first cache and a second cache. A reference count is maintained in the second cache for the page when the page is stored in the second cache. It is determined that the page is to be promoted from the second cache to the first cache. In response to determining that the reference count is greater than zero, the page is added to a Least Recently Used (LRU) end of an LRU list in the first cache. In response to determining that the reference count is less than or equal to zero, the page is added to a Most Recently Used (LRU) end of the LRU list in the first cache. | 09-05-2013 |
20130232295 | ADAPTIVE CACHE PROMOTIONS IN A TWO LEVEL CACHING SYSTEM - Provided are a computer program product, system, and method for managing data in a first cache and a second cache. A reference count is maintained in the second cache for the page when the page is stored in the second cache. It is determined that the page is to be promoted from the second cache to the first cache. In response to determining that the reference count is greater than zero, the page is added to a Least Recently Used (LRU) end of an LRU list in the first cache. In response to determining that the reference count is less than or equal to zero, the page is added to a Most Recently Used (LRU) end of the LRU list in the first cache. | 09-05-2013 |
20140032817 | VALID PAGE THRESHOLD BASED GARBAGE COLLECTION FOR SOLID STATE DRIVE - A method for garbage collection in a solid state drive (SSD) includes determining whether the SSD is idle by a garbage collection module of the SSD; based on determining that the SSD is idle, determining a victim block from a plurality of memory blocks of the SSD; determining a number of valid pages in the victim block; comparing the determined number of valid pages in the victim block to a valid page threshold; and based on the number of valid pages in the victim block being less than the valid page threshold, issuing a garbage collection request for the victim block. | 01-30-2014 |
20140181383 | RELIABILITY SCHEME USING HYBRID SSD/HDD REPLICATION WITH LOG STRUCTURED MANAGEMENT - In one embodiment, a method of managing data includes managing a first copy of data in a solid state memory using a controller of the solid state memory, and managing a second copy of the data in a hard disk drive memory using the controller. In another embodiment, a system for storing data includes a solid state memory, at least one hard disk drive memory, and a controller for controlling storage of data in both the solid state memory and the hard disk drive memory. Other methods, systems, and computer program products are also described according to various embodiments. | 06-26-2014 |
20140201448 | MANAGEMENT OF PARTIAL DATA SEGMENTS IN DUAL CACHE SYSTEMS - For movement of partial data segments within a computing storage environment having lower and higher levels of cache by a processor, a whole data segment containing one of the partial data segments is promoted to both the lower and higher levels of cache. Requested data of the whole data segment is split and positioned at a Most Recently Used (MRU) portion of a demotion queue of the higher level of cache. | 07-17-2014 |
20140240335 | CACHE ALLOCATION IN A COMPUTERIZED SYSTEM - System and method for operating a solid state memory containing a memory space. The present invention provides a computerized system that includes a solid state memory having a memory space; a controller adapted to use a first portion of the memory space as a cache; and a garbage collector adapted to use a second portion of the memory space to collect garbage in the solid state memory. The controller is adapted to change a size of at least one of the first portion and the second portion of the memory space during operation of the solid state memory. | 08-28-2014 |
20140359228 | CACHE ALLOCATION IN A COMPUTERIZED SYSTEM - A computerized system comprises a solid state memory and a controller adapted to use the solid state memory as a cache for the computerized system. The controller is adapted to add or to remove a chunk of data from the cache based on a detected frequency of occurrence of the chunk of data in the computerized system. | 12-04-2014 |