What are the differences between SCSI and iSCSI in term of features, functionality and architecture?
I am assuming you are asking about parallel or serial attached SCSI vs. iSCSI. iSCSI is the SCSI protocol mapped to TCP/IP and run over standard Ethernet technologies. This allows Ethernet networks to be deployed as SANs at a much lower TCO than Fibre Channel (FC).
The iSCSI on Ethernet (10/100/1000/10000) is a good viable external interconnect between application server initiators and storage targets. Parallel SCSI and SAS are good internal interconnects between the server and its internal storage or between the array controller and its drawers of hard disk drives (HDDs).
Dig Deeper on SAN technology and arrays
Related Q&A from Marc Staimer
Network File System and Common Internet File System/Server Message Block were designed to work with any operating system, but NFS remains dominant in... Continue Reading
Object storage has unique features, including erasure coding and multi-copy mirroring, which may make it better suited to data protection than more ... Continue Reading
Why would you attach NAND flash storage directly to the memory channel? Isn't RAM much faster than NAND? Marc Staimer discusses this and more in this... Continue Reading