NAS and San

1. NAS（Network Attached Storage, Network attached storage server ）

In short ,NAS It's just one File Server, As long as NAS Connect to the network , Then other hosts on the network can access NAS It's the data on the Internet .

The common ones are NFS、SAMBA、FTP etc. .

because NAS It is connected to the network , If there is a large number of visits by a user on the network NAS Data on , It is easy to cause the network to stop .

2. SAN（Storage Area Networks, Storage lan ）

In short ,SAN It is an external storage device .

Generally, a simple external storage device can only pass through some interfaces （ Such as SCSI or eSATA） For a single host , and SAN Through some

Special interface or channel to provide disk access for all machines in the LAN .

The difference between the two ：

SAN Is to provide “ disk （block device）” For the host , Mount the use SAN Your host will have an extra large disk , And for SAN Partition and format the disk provided .

and NAS What is offered is “ File system of network protocol （NFS、SAMBA etc. ）”, Partition and formatting are not allowed .

The above is based on 《 Bird brother Linux Private dishes - Server installation 》 Induction and summary of relevant contents .

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