Patent ID: 7464019

Claim:
In a network for operating a disk storage system wherein a server means with a first host operating system means and second operating system means which communicates with disk units in a storage module means, a system for utilizing disks having formats compatible with said second operating system means comprising: (a) server means including; (a1) a first host operating system means for requesting access to said storage module means; (a2) said second operating system means having emulation software means, including emulation device driver means, for communication with disk units having formats compatible with said second operating system means; (a3) a plurality of fiber channel bus adaptors connected to SCSI buses including; (a3a) means to register, via said emulation device driver means, each SCSI bus as either registered for SCSI pass-through or deregistered as not available for pass-through; (a3b) means to utilize said registered SCSI bus for data transmissions; (b) multipath connection means connecting said server means to said storage module means; (c) said storage module means holding multiple disk units.