DAS和SAN之间的区别

1.直接附加存储(DAS)：
永久连接到台式计算机的存储设备。 DAS仅适用于单个用户(硬盘驱动器连接到计算机)。它非常适合可以以较低的启动成本配置足够数量的存储的中小型企业。 DAS机柜将是一个单独的相邻机柜，其中包含其他磁盘驱动器。

直接附加存储(DAS)的组成部分–

1. Storage devices
2. Cables
3. Disk Array
4. Protocol
5. Storage protocols: ATA, SCSI, SAS, SASA, FC 

2.存储区域网络(SAN)：
SAN通过网络在块级别上起作用。可以使用ISCSI或FC访问的存储。适用于需要高性能的关键业务应用。基于SAN的存储解决方案的主要优点是能够将存储阵列共享到多台服务器。这使您通常可以由专用的SAN管理员根据需要配置存储容量。在SAN环境中，典型的是更高级别的性能吞吐量，并且数据通过冗余磁盘控制器和驱动器具有很高的可用性。

存储区域网络(SAN)的组成部分–

1. Node ports
2. Cables
3. Interconnect device such as: Hubs, switches, directors
4. Storage arrays
5. SAN management Software 

DAS和SAN之间的区别：

SR.NO	DAS	SAN
1.	DAS stands for Direct Access Storage.	SAN stands for Storage Area Network.
2.	For backups and recovery, Sectors are used.	For backups and recovery, Block by block copying technique is used.
3.	It is easy to install.	It is difficult to install.
4.	It is not complex.	It is complex.
5.	It is less expensive	It is more expensive.
6.	For data transmission, IDE/SCSI is used.	For data transmission, Fiber Channel, IP is used.
7.	Its capacity in bytes is 10^9.	Its capacity in bytes is greater than 10^12.
8.	It does not allow to share files at different operating system.	It allows to share files at different operating system.