fibre channel is much faster, more robust and a lot more expensive, with dedicated fibre-optic cables between the SAN drives, the fibre-channel switch, and the server(s). Usual speed is 2GB, 4GB, 8GB per channel. 16GB is under development now.
iSCSI basically is SCSI commands over TCP so can be done in hardware or software, and just routes over your existing switch network so can be fibre-optic or CAT6 1GBe. Usual speed is 1G or 10G. As iSCSI can use your existing network switch network it required less investment than Fiber Channel.
FCoE is fibre channel over ethernet, and is brand new technology. It's sort of a hybrid technology of the two, using fibre-channel block level commands over ethernet, instead of scsi block level commands over ethernet. It's fibre-channels way of nicking the flexibility of iSCSI, while still using fibre channel infrastructure.
fibre channel is much faster, more robust and a lot more expensive, with dedicated fibre-optic cables between the SAN drives, the fibre-channel switch, and the server(s). Usual speed is 2GB, 4GB, 8GB per channel. 16GB is under development now.
ReplyDeleteiSCSI basically is SCSI commands over TCP so can be done in hardware or software, and just routes over your existing switch network so can be fibre-optic or CAT6 1GBe. Usual speed is 1G or 10G. As iSCSI can use your existing network switch network it required less investment than Fiber Channel.
FCoE is fibre channel over ethernet, and is brand new technology. It's sort of a hybrid technology of the two, using fibre-channel block level commands over ethernet, instead of scsi block level commands over ethernet. It's fibre-channels way of nicking the flexibility of iSCSI, while still using fibre channel infrastructure.