Moving a server over to a RAID

Luis Paulo luis.barbas at
Tue Aug 24 16:02:55 UTC 2010

On Tue, Aug 24, 2010 at 4:37 PM, Michael Pavling <pavling at> wrote:
> On 24 August 2010 16:12, Calcpage <calcpage at> wrote:
>> Wow, is setting up RAID really that complicated?  I set up a new
>> server a few months ago and remember setting up RAID via the BIOS
>> menu.  I only have 4x72GB drives but they are all recognized as one
>> big drive....
> I think you're confusing hardware RAID through a controller built-in
> or added to your computer with software RAID managed by Ubuntu.
> BTW If your "hardware" RAID is "fakeraid" you might be lining yourself
> up for a fall...

Right. I've been told there are good "hardware raid" controllers for
linux (3ware?, never tried it), but it's a bit expensive.

If it is "fakeraid" (google for it), you may get into problems, true, I did.
That apart, "fakeraid" uses your cpu and memory, so I prefer to stick
with mdadm (we may call that "software" raid).
You have much more control over it, but it may a bit confusing at
start (see man mdadm).

So, mdadm raid is what this topic was about, not hardware or "fakeraid" raid


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