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Users


Password


Access


Millie


#Shorts?


Read


Pluto


&LittleTail!


Full


Louie


AWet#i


Full


Mickey


—Earls?


Write


FIGURE 1.4 A client/server network

Mickey    Louie



Network Attached Storage


As discussed earlier, the most common type of server found on networks is the file server. File servers are typically the most accessed servers as well, storing files for all the users on the network. Traditionally, these servers are just computers, running a special network operating system that allows files


and programs to be shared. Additionally, these servers cost several thousand dollars.


In the last few years, however, it has become very attractive to network administrators to replace these file servers with a new breed of device known as network attached storage. Network attached storage, such as the Quantum® SNAP! Server, is basically a small network device, or “black box,” with a network card and a large hard disk. The network attached storage device usually runs a special proprietary operating system that allows the box to function as a file server.


The major reason these devices are so attractive to network administrators is that they are very inexpensive compared to traditional file servers. For example, a typical Pentium II Server with 256MB of RAM might cost a few thousand dollars. On the other hand, a 20GB network attached storage device might cost only a few hundred dollars.


Another advantage to these devices is that they are very easy to administrate. Usually, security and access are set up by connecting to the device with a web browser and making changes using a web interface.

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