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What is NAS?
I've heard about another term called SAN. What is the difference between NAS and SAN?
Will NAS affect network performance?
What're the differences between NAS and general-purpose NT or UNIX file server?
What is NAS?
NAS is a term used to refer to storage elements that connect to a network and provide file access services to computer systems. A
NAS storage element consists of an engine, which implements the file services, and one or more devices on which data is stored. NAS
may be attached to any type of network.
I've heard about another term called SAN. What is the difference between NAS and SAN?
Compared to NAS, SAN is a network architecture whose primary purpose is the transfer data between computer systems and storage
elements, and among storage elements. Here're some brief comparisons for your reference:
NAS SAN
Cost is lower Cost is higher
Data typically is accessed by clients Data typically is accessed by servers
File system resides in NAS File system resides in server
For small business and workgroup For large enterprise
Providing file-based data accessing Providing block-based data transfer
Using standard file sharing protocol Using encapsulated SCSI protocol
Will NAS affect network performance?
While NAS is implemented in the networking environment, it will balance the network traffic and relieve the network congestion.
What're the differences between NAS and general-purpose NT or UNIX file server?
Please refer to below table:
NAS File_Server
Dedicate on File serving,disk I/O,network traffic,user
authentication and security tasks
For general-purpose uses
Easy remote,web-based management interface Local software-based management
No client licensing cost User access limitation due to client licenses
No down time at Network storage expansion
Server needs to be shutdown and file serving to be stopped at
Storage expansion
Optimized and compact hardware design
Oversized hardware design with complex architecture to fit a
variety of applications
OS design is optimized for file service OS design is for general purpose use
Thin and compact OS Fat and complex OS
True cross-platform file sharing OS-dependent file sharing
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