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NAS vs. USB HD

I wanted to know what the differences were between a NAS and a USB HD?  If we are using this as a single point of storage, why would choose one over the other?  What are the advantages?

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ee4itpro
Asked:
ee4itpro
1 Solution
 
CallandorCommented:
A NAS can support different RAID arrays, as well as FTP and other protocols.  It can be accessed by any machine on the network, and can be configured with permissions for different users.  A NAS can also function as a media server for different filetypes.

A USB requires a host machine to attach to, and that host machine must be powered on.  It is relatively cheap and if you buy an enclosure, you can upgrade the hard drive to whatever you can buy.  It is limited in transfer speed (480Mbit/sec plus overhead, versus gigabit if you have that).
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itprotocallCommented:
I would use a NAS as my primary storage - store databases, file shares, etc...

whereas a USB would be a good 'backup' location or personal storage :-)
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