Abstract: Methods, system and computer products for user-managed multi-path performance in balanced or unbalanced fabric configurations. Exemplary embodiments include a path priority selection method, including selecting a first I/O data path to be a highest priority path in a storage area network system, selecting a second I/O data path to be a low priority path, selecting an I/O threshold value, the I/O threshold value indicating that I/O data load is excessive, directing the load balance of I/O traffic to the first I/O data path, thereby placing the second I/O data path in a standby state, monitoring the first I/O data path, determining if the first I/O data path has reached the threshold value and performing a controlled failover of the first I/O data path to the second I/O data path when an I/O data load on the first data path has reached the threshold value.

Abstract: Methods, system and computer products for user-managed multi-path performance in balanced or unbalanced fabric configurations. Exemplary embodiments include a path priority selection method, including selecting a first I/O data path to be a highest priority path in a storage area network system, selecting a second I/O data path to be a low priority path, selecting an I/O threshold value, the I/O threshold value indicating that I/O data load is excessive, directing the load balance of I/O traffic to the first I/O data path, thereby placing the second I/O data path in a standby state, monitoring the first I/O data path, determining if the first I/O data path has reached the threshold value and performing a controlled failover of the first I/O data path to the second I/O data path when an I/O data load on the first data path has reached the threshold value.

Abstract: In accordance with a computer program product, apparatus and a method there is provided a redundant network wherein a host computer operates with a plurality of storage devices by monitoring conditions of the multipath storage network and controlling a storage multipath device driver in conjunction with an associated storage multipath device input/output (I/O) pending queue to increase I/O throughput to a storage device driver, such as a disk device driver, when I/O demand increases, and to decrease I/O throughput to the storage device driver in the event of an I/O error condition.

Abstract: In accordance with a computer program product, apparatus and a method there is provided a redundant network wherein a host computer operates with a plurality of storage devices by monitoring conditions of the multipath storage network and controlling a storage multipath device driver in conjunction with an associated storage multipath device input/output (I/O) pending queue to increase I/O throughput to a storage device driver, such as a disk device driver, when I/O demand increases, and to decrease I/O throughput to the storage device driver in the event of an I/O error condition.

Abstract: A process, apparatus, and system are disclosed for automatically backing up and restoring a system configuration during the installation of new software on a software device. The apparatus may be embodied as a software installation module having a pre-removal module and a post-installation module. The pre-removal and post-removal procedures are embedded within a systems packaging files so that they may be automatically executed during the installation procedures for installing the new software. The apparatus may also include a recovery module configured to perform procedures that are similar to, but potentially more thorough than the procedures implemented by the post-installation procedure. Specifically, the apparatus may be incorporated in a server within a storage area network (SAN) and configured to operate with a plurality of physical disk drives also connected to the storage area network (SAN).