SAN vs NAS Part 4: The Layer Cake
Last post we covered the differences between NFS and iSCSI (NAS and SAN) and determined that we saw a different set of commands when interacting with a file. The NFS write generated an OPEN command, while the iSCSI write did not. In this post we’ll cover the layering of NAS (file or file systems) on top of SAN (SCSI or block systems) and how that interaction works.
Please note! In modern computing systems there are MANY other layers than I’m going to talk about here. This isn’t to say that they don’t exist or aren’t important, but just that we are focusing on a subset on them for clarity. Hopefully.
To learn more and to read the entire article at its source, please refer to the following page, SAN vs NAS Part 4: The Layer Cake- Varrow Blogs