Is it possible to create a RAID 0 with two different capacity drives and create a second partition with the missing space?

Megaqwerty

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Jul 11, 2016
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I know that the RAID 0 partition itself will be limited to the matching capacity, but is it possible to capture the unmatched capacity?

For example, if I have:
1 x 1 TB drive
1 x 2 TB drive

Can I partition these to:
1 x RAID 0 2 TB partition (split across about both drives)
1 x 1 TB partition (on the 2TB drive only)

Is this possible? If so, what Windows software can be used to do this?

If this is possible, is there any performance degradation from doing this? If there is, is the resulting performance effect still positive? That is, is the net effect still improved read and write speeds (on average) and thus is this still worth pursing?

Thank you!
 
Solution
Likely depends on the RAID controller. Wouldn't recommend it even if it did work though. That stand Skiba 1tb partition would impact the performance of the raid 0 if it was taking reads or writes at the same time

marko55

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Nov 29, 2015
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Likely depends on the RAID controller. Wouldn't recommend it even if it did work though. That stand Skiba 1tb partition would impact the performance of the raid 0 if it was taking reads or writes at the same time
 
Solution

Megaqwerty

Commendable
Jul 11, 2016
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1,510

I understand that simultaneous use of both partitions would impact performance, but it would be nice to have the second partition for archiving and other less frequently used data.
 

marko55

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Nov 29, 2015
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I understand but its never recommended to use mismatched drives for RAID, and the ability to do what you're explaining will depend if your RAID controller will do it. You can always give it a try if you really want that space that bad. Otherwise, pick up a 2nd 2TB drive & RAID away.