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Can you add more hard drives to a raid 0 setup?

Last response: in Storage
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June 6, 2010 6:55:47 PM

Hello,

can you add an extra hard drive to a raid 0 that is already set up?
June 6, 2010 8:15:08 PM

No you must backup the data and reset the RAID 0.
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June 6, 2010 8:21:09 PM

Thanks Rofl
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June 7, 2010 10:10:49 PM

rofl_my_waffle said:
No you must backup the data and reset the RAID 0.


Actually, that is not necessarily the case. Depending on your RAID setup, many of the advanced RAID cards support dynamic migration and expansion of arrays. Assuming you are using fakeraid (eg onboard raid or a cheap raid card), the answer is exactly as rofl says.

--Nick
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June 8, 2010 7:48:28 AM

nick2253 said:
Actually, that is not necessarily the case. Depending on your RAID setup, many of the advanced RAID cards support dynamic migration and expansion of arrays. Assuming you are using fakeraid (eg onboard raid or a cheap raid card), the answer is exactly as rofl says.

--Nick



O rly? I haven't heard of a card capable of rebuilding a RAID-0 array as there isn't any data to base the array rebuilding on.

Other RAID Modes (5 and 6) do have parity data to rebuild the data. RAID 1 could simply copy over the data. What would RAID-0 do, or how would the controller determine which bits would go to the newly added drive?
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June 8, 2010 1:17:50 PM

It's not an issue of parity data if the RAID set isn't degraded or failed. We're talking about migration of intact data. Many of the PERC controllers shipping with Dell servers for example can expand/migrate a live RAID-0 by adding an additional drive.
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June 8, 2010 1:51:14 PM

nocheese said:
It's not an issue of parity data if the RAID set isn't degraded or failed. We're talking about migration of intact data. Many of the PERC controllers shipping with Dell servers for example can expand/migrate a live RAID-0 by adding an additional drive.


Okay, learned something new today. :na: 
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June 18, 2010 6:31:12 PM

Best answer selected by Easy190E.
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