An information processing apparatus performs first migration processing of migrating data from a relatively-old-generation magnetic tape included in one storage pool of a plurality of storage pools to relatively-new-generation magnetic tapes included in each of the plurality of storage pools in a case where a total value of free capacities of the relatively-new-generation magnetic tapes in each of the plurality of storage pools is equal to or larger than a threshold value, and performs second migration processing of migrating data from a plurality of migration-source magnetic tapes included in the storage pool to migration-destination magnetic tapes of which the number is smaller than the number of the migration-source magnetic tapes in a case where the total value is smaller than the threshold value.

Computer-implemented methods for optimized compute resource addition and removal in a distributed storage platform. In a case of a newly added compute resource being connected to a storage subsystem shared by compute resources in the distributed storage platform, the distributed storage platform formulates a redistribution plan to redistribute a subset of a global address space of the storage subsystem to a newly added logical volume in the storage subsystem. In a case of a removed compute resource being disconnected from the storage subsystem, the distributed storage platform formulates a redistribution plan to redistribute respective logical blocks in a logical volume for the removed compute resource to respective remaining logical volumes for respective remaining compute resources in the distributed storage platform. The distributed storage platform executes the redistribution plan to reassign data block ownerships on one or more physical memory devices in the storage subsystem.

An information processing apparatus selects a magnetic tape as a data migration target from among a plurality of migration-source magnetic tapes based on an index value correlated with a read frequency of valid data recorded in the magnetic tape, the index value being calculated for each of the magnetic tapes, specifies valid data recorded in the selected magnetic tape, and performs control of migrating the valid data to a migration-destination magnetic tape.

A host Flash Translation Layer (FTL) synchronizes host FTL operations with the drive FTL operations to reduce write amplification and over-provisioning. Embodiments of FTL synchronization map, at the host FTL software (SW) stack level, logical bands in which data is managed, referred to as host bands, to the physical bands on a drive where data is stored. The host FTL tracks validity levels of data managed in host bands to determine validity levels of data stored in corresponding physical bands, and optimizes defragmentation operations (such as garbage collection processes and trim operations) applied by the host FTL SW stack to the physical bands based on the tracked validity levels.

A Near Memory Processing (NMP) module including: a plurality of memory units: an Input/Output (I/O) interface configured to receive commands from a host system, wherein the host system includes a host memory controller configured to access the plurality of memory units: a decoder configured to decode the commands and generate a trigger; and an NMP memory controller configured to: receive the trigger from the decoder; and generate a signal in response to the trigger to synchronize the NMP module with the host system.

An information processing apparatus performs first migration processing of migrating data from a relatively-old-generation magnetic tape included in one storage pool of a plurality of storage pools to relatively-new-generation magnetic tapes included in each of the plurality of storage pools in a case where the number of tape drives which are available for data migration is equal to or larger than a threshold value, the tape drives being relatively-new-generation tape drives among a plurality of generations of tape drives, and performs second migration processing of migrating data from migration-source magnetic tapes as relatively-old-generation magnetic tapes included in the storage pool to migration-destination magnetic tapes of which the number is smaller than a multiplicity in a case where the number of the tape drives is smaller than the threshold value.

The functions of a mainframe environment are expanded by leveraging the functions of an open environment. A second storage of an open system externally connected to a first storage of a mainframe system comprises a second main volume of an open environment generated in association with a main logical device of the second storage, and a second sub volume of an open environment generated in association with a sub logical device of the second storage; the first storage comprises a first main volume of a mainframe environment generated in association with the main logical device of the second storage, and a first sub volume of a mainframe environment generated in association with the sub logical device of the second storage; when the first storage receives a data processing request from a host, the first storage reflects the processing request in the second storage and completes the processing; and when the first storage receives an execution request of a prescribed function, the first storage causes the second storage to execute the function.

In some examples, fabric driven NVMe subsystem zoning may include receiving, from a non-volatile memory express (NVMe) Name Server (NNS), a zoning specification that includes an indication of a host that is to communicate with a given NVMe subsystem of an NVMe storage domain. Based on the zoning specification, the host may be designated as being permitted to connect to the given NVMe subsystem of the NVMe storage domain. An NVMe connect command may be received from the host. Based on the designation and an analysis of the NVMe connect command, a connection may be established between the given NVMe subsystem of the NVMe storage domain and the host.

An apparatus which includes a first solid state drive (SSD) located on an SSD card having a fixed capacity and a first form factor. The apparatus can further include an adapter located on the SSD card to accommodate a second SSD. The second SSD has a second form factor that is different than the first form factor and is removeable from the SSD card. The apparatus can further include a controller located on the SSD card and configured to access the first SSD and the second SSD.

A processing device in a memory system identifies a first set of bits associated with a translation unit of a memory device, wherein the first set of bits correspond to a page field. The processing device identifies a second set of bits associated with the translation unit of the memory device, wherein the second set of bits corresponds to a block field. The processing device determines that a value representing a page number stored in the page field satisfies a threshold criterion. Responsive to determining that the value representing the page number satisfies the threshold criterion, the processing device determines a difference between the value representing the page number and a threshold value associated with the threshold criterion plurality of block stripes on a memory device. The processing device stores a value representing the difference as a plurality of bits of the second set of bits. The processing device stores a value representing a block number stored in the block field as a plurality of bits of the first set of bits.