Patent application number | Description | Published |
20090300315 | Reserve Pool Management in Virtualized Storage Systems - An apparatus for managing pooled real storage having a usable real storage pool and a reserve real storage pool in a virtualized storage system, comprises an extent controller for allocating and freeing storage extents in said usable real storage pool; a storage use monitor for monitoring storage use in said usable real storage pool; and a reserve pool manager responsive to said storage use monitor for transferring storage extents between said usable real storage pool and said reserve real storage pool. | 12-03-2009 |
20100070734 | Resource Reclamation in Data Storage - Managing resource reclamation in data storage systems is provided. A volume deletion metadata recorder records metadata for one or more deleted volumes. A policy engine, responsive to a predetermined policy rule, applies the policy rule to the metadata. The policy engine initiates policy-controlled data storage space reclamation for the one or more deleted volumes. A volume reclaimer, responsive to the policy engine, reclaims data storage space from the one or more deleted volumes. A resource allocator allocates the data storage space to satisfy a minimum requirement for available zeroed extents that comprise a minimum requirement to satisfy needs of late allocated storage volumes. | 03-18-2010 |
20100146204 | Stored Data Protection and Recovery - A mechanism is provided in a computing system for controlling virtualized storage operable to communicate with a host and with mapped and unmapped storage resource pools. A selection component selects a target for a destructive data storage operation from the mapped storage resource pool. Responsive to the selection of the target, a virtual targeting component creates a virtual target from the unmapped storage resource pool to represent the target. Responsive to the selection of the target, a storage move component moves the target to a protected storage resource pool. Responsive to the creation of the virtual target from the unmapped storage resource pool, storage move component, moves the virtual target to the used storage resource pool. The computing system then performs the destructive data storage operation on the virtual target. | 06-10-2010 |
20110208932 | FLASHCOPY HANDLING - A technique for handling a FlashCopy® process includes receiving a FlashCopy® instruction for a source disk, performing a FlashCopy® point in time copy of the source disk on to a target disk, creating a map specifying the FlashCopy® point in time copy from the source disk to the target disk, creating a primary fdisk for the source disk, if one does not already exist, and creating a primary fdisk for the target disk, if one does not already exist, or, if one does already exist, converting the existing primary fdisk for the target disk into a secondary fdisk, and creating a new primary fdisk for the target disk. | 08-25-2011 |
20110225124 | CREATING A BUFFER POINT-IN-TIME COPY RELATIONSHIP FOR A POINT-IN-TIME COPY FUNCTION EXECUTED TO CREATE A POINT-IN-TIME COPY RELATIONSHIP - Provided are a method, system, and computer program product for creating a buffer point-in-time copy relationship for a point-in-time copy function executed to create a point-in-time copy relationship. A point-in-time copy function is initiated to create a new point-in-time copy relationship from a source volume comprising a first volume to a target volume comprising a second volume. Detection is made that the target volume of the new point-in-time copy relationship is a source volume of a first pre-existing point-in-time copy relationship having as a target volume a third volume. Detection is also made that the target volume of the first pre-existing point-in-time copy relationship is a source volume of a second pre-existing point-in-time copy relationship having as a target volume a fourth volume. A buffer point-in-time copy relationship having a source volume comprising the target volume of the first pre-existing relationship and a target volume comprising a fifth volume is created in response to detecting that the target volume of the new point-in-time copy relationship is the source volume of the first pre-existing point-in-time copy relationship and the detected that the target volume of the first pre-existing point-in-time copy relationship is the source volume of the second pre-existing point-in-time copy relationship. | 09-15-2011 |
20110225380 | MULTIPLE BACKUP PROCESSES - Handling multiple backup processes comprises detecting that a defined storage volume is present in a first cascade of storage volumes, detecting that the defined storage volume is also present in a second cascade of storage volumes, receiving a data write for either the defined storage volume or the last storage volume in the first cascade of storage volumes, and performing a cleaning data write on the defined storage volume in the second cascade of storage volumes, the cleaning data write corresponding to the received data write. | 09-15-2011 |
20110296127 | MULTIPLE CASCADED BACKUP PROCESS - Provided are a method, system, and a computer program product handling a backup process. An instruction is received initiating a new backup from a source volume to a target volume using one of a plurality of backup processes. A determination is made as to whether there is a cascade of volumes using the backup process including the source volume of the new backup. The cascade includes a cascade source volume and at least one cascade target volume, and a write to a storage location in one of the cascade volumes causes a copying of the storage location to be written in the cascade source volume to each of the cascade target volumes in the cascade according to a cascade order in which the at least one cascade target volume and the cascade source volume are linked in the cascade. The cascade, using the backup process of the new backup already including the source volume of the new backup, is modified to include the target volume of the new backup in response to determining that there is the existing cascade. A new cascade using the backup process of the new backup including the source volume and the target volume of the new backup is created in response to determining that there is not the existing cascade. | 12-01-2011 |
20120226879 | FLASHCOPY HANDLING - A technique for handling a FlashCopy® process includes receiving a FlashCopy® instruction for a source disk, performing a FlashCopy® point in time copy of the source disk on to a target disk, creating a map specifying the FlashCopy® point in time copy from the source disk to the target disk, creating a primary fdisk for the source disk, if one does not already exist, and creating a primary fdisk for the target disk, if one does not already exist, or, if one does already exist, converting the existing primary fdisk for the target disk into a secondary fdisk, and creating a new primary fdisk for the target disk. | 09-06-2012 |
20120246427 | MULTIPLE CASCADED BACKUP PROCESS - Provided are a method, system, and a computer program product handling a backup process. An instruction initiates a new backup from a source volume to a target volume using one of a plurality of backup processes. A cascade includes a cascade source volume and at least one cascade target volume, and a write to a storage location in one of the cascade volumes causes a copying of the storage location to be written in the cascade source volume to each of the cascade target volumes in the cascade according to a cascade order in which the at least one cascade target volume and the cascade source volume are linked in the cascade. The cascade is modified to include the target volume of the new backup in response to determining that there is an existing cascade, else a new cascade using the backup process of the new backup is created. | 09-27-2012 |
20120254569 | CREATING A BUFFER POINT-IN-TIME COPY RELATIONSHIP FOR A POINT-IN-TIME COPY FUNCTION EXECUTED TO CREATE A POINT-IN-TIME COPY RELATIONSHIP - Provided are a method, system, and computer program product for creating a buffer point-in-time copy relationship. A point-in-time copy function is initiated to create a new point-in-time copy relationship from a source volume comprising a first volume to a target volume comprising a second volume. A buffer point-in-time copy relationship having a source volume comprising the target volume of the first pre-existing relationship and a target volume comprising a fifth volume is created in response to detecting that the target volume of the new point-in-time copy relationship is the source volume of a first pre-existing point-in-time copy relationship and detecting that the target volume of the first pre-existing point-in-time copy relationship is the source volume of a second pre-existing point-in-time copy relationship. | 10-04-2012 |