Stacked Raid 0 arrays ?

Question

Can you stack raid 0 arrays - e.g. take 2 raid 0 arrays - perhaps 2 sets of pairs of 120Gb 7200rpm SATA drives and feed them into another raid controller - to effectively create a logical 480Gb 28,800rpm drive ?

If it can be done & provides a useful advantage, what is the limit on how many layers can be stacked ?

Does anyone have any professional research results & data on this ?

Thanks.

Answer 1

Ok, I think I understand what you’re saying. Yes, I think what your saying can be done. Basically you have 4 drives on one controller using Raid 0 Correct? I have seen at many as 6 drive on a Raid 0 Array and it was a disaster (see bellow).

Or is it two drives on two controllers? If there is more than one controller you may have to get creative and use software RAID.

However Raid 0(aka spanning) is very risky, especially with more than 2 drives. If lose one drive you’ve lost everything. If you have three or more drives I recommend RAID V. With RAID V you can lose an any drive and still stay operational and simply replace the bad drive and watch the array rebuild no reboot required.