IBM Virtual SCSI Target
The virtual SCSI (VSCSI) protocol as defined in Power Architecture Standard is a protocol that allows one logical partition (LPAR) to access SCSI targets provided by another LPAR. The LPAR that provides one or more SCSI targets is called the VIO server or VIOS. The ibmvstgt driver is a VIOS driver that makes it possible to access exported target devices via the VSCSI protocol.
This driver is based on ibmvstgt driver, but comparing to the original ibmvstgt has a number of important fixes and improvements. The port was made by Bart Van Assche.
You can download it from the SCST SVN repository. See the download page how to setup access to it.