SCST is a mid-level SCSI target subsystem for Linux. This subsystem allows a remote host to access local storage devices through the SCSI protocol. SCST supports multiple network storage protocols, including iSCSI, SRP, and FCoE, and also supports Qlogic 22xx/23xx SCSI HBAs. Strong points of SCST are its stability, maturity, high performance, and low latency. See also the iSCSI-SCST, SRPT and scstqla2x00t projects, as well as open-fcoe.org.
SRPT is a SCSI RDMA Protocol (SRP) target implementation on top of SCST, a mid-level SCSI target subsystem for the Linux kernel. This software makes it possible for remote systems to access local storage over an InfiniBand network. This storage protocol target implementation offers a higher bandwidth and a lower latency than any other storage protocol target implementation available for Linux.