Abstract: A method and system including implementing an iSCSI (Internet Small Computer System Interface) offload target function with RNIC (Remote-direct-memory-access-enabled Network Interface Controller) mechanisms used for RDMA (Remote Direct Memory Access) functions.

Abstract: A method and system for directly accessing a SCSI buffer by a RDMA ATP (Address Translation and Protection) mechanism used in at least one of an iSCSI initiator function and an iSCSI target function. A preregistered SCSI buffer may be identified by means of an ITT (initiator task tag) or TTT (target transfer tag) used as a Stag (steering tag).

Abstract: A method and system including implementing an iSCSI (Internet Small Computer System Interface) offload initiator function with RNIC (Remote-direct-memory-access-enabled Network Interface Controller) mechanisms used for RDMA (Remote Direct Memory Access) functions.

Abstract: A method and system for registering a SCSI (Small Computer System Interface) buffer memory by RDMA (Remote Direct Memory Access) ATP (Address Translation and Protection) Fast Memory Registration.

Abstract: A method and system for providing a datamover interface that interfaces with an iSCSI (Internet Small Computer System Interface) driver and with an iSER (iSCSI Extensions for RDMA (Remote Direct Memory Access)) datamover and an iSCSI datamover.

Abstract: A method and system for detecting and managing an error detected in an iSCSI (Internet Small Computer System Interface) PDU (Protocol Data Unit) by using a RDMA (Remote Direct Memory Access) dedicated receive error queue for error recovery.

Abstract: A method and system for transmitting data along one or more communication channels to a receiving device having addressable memory units, the data having a known size and being split into two or more data packets each having a respective header and each sent along one of said communication channels to a respective memory unit. A respective final data packet to be sent along each communication channel is marked so as to be identifiable by a respective memory unit. For each memory unit receiving the respective final data packet, an interrupt is generated, the receiving device is informed how much data was received by the memory unit, and a cumulative amount of data received by all memory units is determined so as to allow the reading device to identify when no more data packets are to be transmitted.

Abstract: Provided are methods, apparatus and computer programs for recovery from failures affecting a server in a data processing environment in which a set of servers controls a client's access to a set of resource instances. Independent of any server failure, the client or a gateway is provided with an identification of both a primary server for accessing the resource and at least one secondary server for use as a backup server for accessing the same resource instance (for example, the same physical storage disk). The client or gateway connects to the primary server to perform resource access operations. Following a failure that affects availability of the primary server, the client or gateway connects to the previously identified secondary server to access the same resource instance. Provision of the identification of at least one backup secondary server (without requiring the ‘trigger’ of a failure) avoids the need to discover a new server as part of the recovery operation following a failure.

Abstract: The technique disclosed herein provides for simultaneously checkpointing all of the processes in a specified process group or family at the application level, and restoring those processes at a later time, optionally on a different machine, with the parent-child relationships restored intact. File descriptors that are shared among the processes at checkpoint time are restored to the family of processes such that the file descriptors are shared just as they were at the time of taking the checkpoint.

Abstract: The technique disclosed herein provides for simultaneously checkpointing all of the processes in a specified process group or family at the application level, and restoring those processes at a later time, optionally on a different machine, with the parent-child relationships restored intact. File descriptors that are shared among the processes at checkpoint time are restored to the family of processes such that the file descriptors are shared just as they were at the time of taking the checkpoint.

Abstract: A method and system for transmitting data along one or more communication channels to a receiving device having addressable memory units, the data having a known size and being split into two or more data packets each having a respective header and each sent along one of said communication channels to a respective memory unit. A respective final data packet to be sent along each communication channel is marked so as to be identifiable by a respective memory unit. For each memory unit receiving the respective final data packet, an interrupt is generated, the receiving device is informed how much data was received by the memory unit, and a cumulative amount of data received by all memory units is determined so as to allow the reading device to identify when no more data packets are to be transmitted.