What is RAID?

  Pine Man 10:38 12 Jun 2009

Can anybody direct me to, or give me an idiots explanation of, RAID?

I have a two year old PC with two SATA HDDs and two SATA DVD writers. According to my BIOS RAID is disabled. Everything works fine.

What would be the advantage/disadvantage of enabling RAID?

I have searched Google etc but I end up with more questions than answers!

  ambra4 11:12 12 Jun 2009

What is RAID, RAID explained?

click here

  Pine Man 11:26 12 Jun 2009

Thanks - I think I understand it now.

Basically I could combine my two 320GB HDDs into one 640GB HDD if I wanted?

  Batch 11:48 12 Jun 2009

This should provide a good overview of what's possible with RAID. But note that many disk controllers do not support all forms of RAID.

Whilst the various RAID standards have specific applications, personally I would not recommend RAID unless you particularly need the benefits of those applications.

For example, any performamnce benefits would be marginal (at best) in the average PC.

Also, protection against a single hard disk failure needs to be weighed against the use of extra disk space and the fact that disks are VERY reliable these days (RAID evolved quite some years ago when disks failures were more common).

In fact, RAID is generally much more appropriate for use in servers where VERY high availability is required and the impact of a system going down would be severe (e.g. an online banking system).

  Batch 11:52 12 Jun 2009

Oops! forgot the link: click here

  Pine Man 11:59 12 Jun 2009

Thank you both very much for your speedy and helpful replies.

I am now 'expert' enough to know that I don't actually need it!

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