International Business Machines Corporation

Oren Bar

Itay Maoz

Shay Haim Akirav

Roman Barsky

Vadim Stotland

Joseph W Dain

Elena Drobchenko

For efficient high availability for a multi-node cluster using a processor device in a computing environment, using duplicate, standby host-bus adaptors (HBAs) for alternate nodes with respect to a node with the duplicate, standby HBAs using duplicate credentials of active HBAs of the node for shutting down the node, taking an active HBA of the node offline, and/or activating one of the alternate nodes. A failed node is shut down by an active one of the plurality of alternate nodes using a fence device, and all jobs of the failed node are taken over by the active node using a shared data structure including SCSI device assignments, SCSI reservations, and required host notifications.

Efficient high availability for a SCSI target over a fibre channel

For efficient reclamation of pre-allocated direct memory access (DMA) memory in a computing environment, hot-add random access memory (RAM) is emulated for a general purpose use by reclamation of pre-allocated DMA memory reserved at boot time by notifying a non-kernel use device user that the non-kernel use device has a smaller window, stopping and remapping to the smaller window, and notifying a kernel that new memory has been added, wherein the new memory is a region left after the remap. The hot-add RAM is split into at least two continuous parts.

Efficient reclamation of pre-allocated direct memory access (DMA) memory

Methods, systems, and computer program product embodiments for cataloging data in a backup storage environment, by a processor device, are provided. In a storage system using tape library data replication between an originating site and one or more backup sites, data catalog data is replicated between the originating site and the backup site such that replicated data moved from the originating site to the backup site is placed into a catalog duplicative of the originating site.

Granular instant import of replicated VTL cartridge into a backup catalog

For efficient high availability for a multi-node cluster using a processor device in a computing environment, using duplicate, standby host-bus adaptors (HBAs) for alternate nodes with respect to a node with the duplicate, standby HBAs using duplicate credentials of active HBAs of the node for shutting down the node, taking an active HBA of the node offline, and/or activating one of the alternate nodes.

Executing multiple concurrent transactions on the single database schema using a single concurrent transaction database infrastructure, wherein the single database schema is a single concurrent transactional relational database.

Providing multiple concurrent transactions on a single database schema using a single concurrent transaction database infrastructure

For efficient reclamation of pre-allocated direct memory access (DMA) memory in a computing environment, hot-add random access memory (RAM) is emulated for a general purpose use by reclamation of pre-allocated DMA memory reserved at boot time for responding to an emergency by notifying a non-kernel use device user that the non-kernel use device has a smaller window, stopping and remapping to the smaller window, and notifying a kernel that new memory has been added, wherein the new memory is a region left after the remap.

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Tel Aviv, Israel

Oren Bar