Building a NAS

I have 4 1TB drives and want to make a NAS device as a Raid 5 or 10. I also have some old PC's I can use.
The question is: Do I need a Raid controller to configure the raid first or does some of the NAS software create the Raid for me?
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Either way will work, but it will depend on the software you use. Openfiler is a great open source NAS/SAN software: It's linux based and can do a software RAID.

There's always advantages and disadvantages of doing software RAID vs. hardware RAID. But for a small NAS that's not doing a whole lot save the money and just go with the software RAID.

You can use linux to build a sofware raid.

I'd recommend you NOT run the primary os on the RAID, Just your data.

(Or you could setup a mirror raid for the primary os on the box)

It makes it easier to rebuild/reattach the data if the primary /. is on a seperate hard disk, if that disk crashes, the raid remains intact.
It also makes it easier for you to upgrade the unit without fear of corrupting the partition.

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let the NAS software do it.  openfiler, freenas, nexenta,  off-the-shelf linux, off-the-shelf-solars will all do this for free, no need to buy a controller, and, in fact, host-base RAID is preferred.  An old PC is fine, you don't need much
madunix (Fadi SODAH)Chief Information Security Officer Commented:
calitechAuthor Commented:
Thanks I will get started on this project soon
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