Abstract: A computer-implemented method, according to one embodiment, includes: sending a request to a target server to initiate a unidirectional connection, receiving a reply indicating whether the target server is capable of hosting the unidirectional connection or indicating identification of a unidirectional port, initiating a unidirectional connection to the identified unidirectional port of the target server in response to the reply providing the identification of the unidirectional port, sending a request to begin sending data to the target server over the unidirectional connection, receiving a response from the target server indicating that the target server is ready to receive data over the unidirectional connection, sending data to the target server over the unidirectional connection, sending a termination message over the unidirectional connection in response to sending the data to the target server, terminating the unidirectional connection, and performing a next communication with the target server over th

Abstract: A computer-implemented method, according to one embodiment, includes: transferring data over a network using a first mode; randomly, periodically and/or continuously determining network performance characteristics during the transferring, and applying a policy to the network performance characteristics determined during the transferring. The first mode of data transfer is continued to be used in response to a result of applying the policy mandating continued use of the first mode. Yet, in response to the result of applying the policy mandating use of a second mode, the second mode of data transfer is selected. Moreover, data is transferred over the network using the second mode in response to selecting the second mode.

Abstract: A computer-implemented method, according to one embodiment, includes: transferring data over a network using a first mode, at least one of randomly, periodically and continuously determining network performance characteristics during the transferring, applying a policy to the network performance characteristics determined during the transferring, continuing to use the first mode of data transfer in response to a result of applying the policy mandating continued use of the first mode, selecting a second mode of data transfer in response to the result of applying the policy mandating use of the second mode, and transferring data over the network using the second mode in response to selecting the second mode.

Abstract: A computer-implemented method, according to one embodiment, includes: transferring data over a network using a first mode, at least one of randomly, periodically and continuously determining network performance characteristics during the transferring, applying a policy to the network performance characteristics determined during the transferring, continuing to use the first mode of data transfer in response to a result of applying the policy mandating continued use of the first mode, selecting a second mode of data transfer in response to the result of applying the policy mandating use of the second mode, and transferring data over the network using the second mode in response to selecting the second mode.

Abstract: A computer-implemented method, according to one embodiment, includes: sending a request to a target server to initiate a unidirectional connection, receiving a reply indicating whether the target server is capable of hosting the unidirectional connection or indicating identification of a unidirectional port, initiating a unidirectional connection to the identified unidirectional port of the target server in response to the reply providing the identification of the unidirectional port, sending a request to begin sending data to the target server over the unidirectional connection, receiving a response from the target server indicating that the target server is ready to receive data over the unidirectional connection, sending data to the target server over the unidirectional connection, sending a termination message over the unidirectional connection in response to sending the data to the target server, terminating the unidirectional connection, and performing a next communication with the target server over th

Abstract: LAN-managed storage volumes are managed by a LAN storage manager installed on a storage management server. In processing a LAN-free storage volume request, the LAN tape manager selects a LAN-managed storage volume responsive to the LAN-free storage volume allocation request wherein the LAN-managed storage volume is initialized as a candidate for a LAN-free storage operation. The LAN-managed storage volume may be initialized by the LAN storage manager as a candidate for a LAN-free storage operation prior to the LAN storage manager receiving the LAN-free storage volume allocation request or in response to the LAN storage manager receiving the LAN-free storage volume allocation request. Additionally, prior to being initialized as a candidate for a LAN-free storage operation, the LAN-managed storage volume may be a pre-existing storage volume or a scratch storage volume.

Abstract: A synchronization library of mutex functions and condition variable functions for threads which are compatible with pthread library functions conforming to a (POSIX) standard. The library can utilize a mutex data structure and a condition variable data structure both including lockwords and queuing anchors. In the library, Compare Swap (CS) instruction processing can be used to protect shared resource. The synchronization library can support priority queuing of threads and can have an ability to yield control when CS spin lock iterations exceed a set limit.