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Boot from SAN is only supported on SAN, not NAS… that’s why it’s called ‘Boot from SAN’.ĬIFS is the Common Internet File system, it’s a version of SMB, the Server Message Block. We can get really good cost savings from this. This makes it possible to have diskless servers where we don’t even need to put a local hard drive in that server. Because SAN provides block level access, which appears the same to the client as a locally installed drive, it’s possible to boot directly from the remote storage. Some storage systems still work like that, but a lot of the newer storage systems support all of the NAS and all of the SAN protocols as well on the same system.Ī feature that is only available in SAN is ‘Boot from SAN’. Back in the old days, your storage system would typically support either SAN or NAS, but not both at the same time. Many modern storage systems support both NAS and SAN protocols. ISCSI – the Internet Small Computer System Interface

I’ll cover the SAN protocols in more depth in later videos. We don’t use the existing network cards, cables, switches that we have for our normal data network, we will put in a dedicated network just for storage. SAN typically has a dedicated storage network infrastructure. The client will see it showing up just like as if you’d added a new hard drive in the client and it will have to format the storage with a file system before it can use it.

The client connects to its storage and gets low level block access to that storage. With SAN the management of the file system resides with the client. SAN stands for Storage Area Network and it provides block level access to the storage resources. So the existing network cards, cables, and switches that were already there in your local area network and it is being used for data, will also be used for storage as well.ĬIFS/SMB – the Common Internet File system / Server Message Block NAS typically uses the existing data network infrastructure. The client connects to the storage system, the storage is already there and configured, and the file system is managed by the storage system. Meaning that with NAS, the management of the file system resides with the storage system. NAS stands for Network Attached Storage and it provides file level access to the storage system.