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NAS与SAN
2022-07-05 10:12:00 【全栈程序员站长】
1. NAS(Network Attached Storage,网络附加存储服务器)
简单地说,NAS就是一台File Server,只要将NAS连接上网络,那么在网络上面的其他主机就能够访问NAS上的数据了。
常见的如NFS、SAMBA、FTP等。
由于NAS是接在网络上面,如果网络上有某个用户大量访问NAS上的数据时,很容易造成网络停顿的。
2. SAN(Storage Area Networks,存储局域网)
简单地说,SAN就是一个外接式的存储设备。
一般单纯的外接式存储设备仅能通过某些接口(如SCSI或eSATA)提供给单独一台主机使用,而SAN则可以通过某些
特殊的接口或信道来提供局域网内的所有机器进行磁盘访问。
两者的区别:
SAN是提供“磁盘(block device)”给主机用,挂载使用SAN的主机会多出一个大磁盘,并可针对SAN提供的磁盘进行分区与格式化等操作。
而NAS提供的则是“网络协议的文件系统(NFS、SAMBA等)”,不可进行分区与格式化。
以上是基于《鸟哥的Linux私房菜-服务器架设篇》相关内容的归纳与总结。
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