iSCSI vs iSER vs NVMe-TCP vs NVMe-RDMA

iSCSI（Internet Small Computer System Interface） It is a popular SCSI The agreement extends to TCP/IP The Internet , So we created a system based on IP Storage LAN SAN Block storage protocol , It's also a cloud walk on the road FASS Full Flash software defines one of the built-in block storage protocols .

iSCSI Have a very solid foundation ：SCSI、TCP and IP, So in the past 20 It has been widely used during the year , Now many operating systems and Hypervisor All have built-in support .Linux Kernel 3.1 Version in its kernel state Linux SCSI Target（ Commonly referred to as LinuxIO, Abbreviation for LIO） Joined the iSCSI Target Support for .

As a pure software solution ,iSCSI With very low cost , It doesn't need to change the existing system , Including hardware and software , At the same time iSCSI The management of storage network is actually for IP/ Ethernet management . Of course , In the case of performance requirements ,iSCSI Hardware implementation scheme or hardware acceleration scheme can also be used .

iSER（iSCSI Extensions for RDMA） yes iSCSI The evolution of protocols , It takes advantage of it. RDMA（Remote Direct Memor