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Rearranging RAID 10 disks on a CERC 1.5/6ch
I recently needed to expand my capacity, and after some research, decided on going from 4 160 Gig disks in a RAID 10 configuration, to 2 700 Gig disks and 2 1000 Gig disks in RAID 10. (The reason for the odd sizing was to avoid any issues that the controller has with reconfiguring 1.9 TB of data. They say the bug is fixed, but I'm cautious.)
When I was preparing to upgrade, I noticed that the disks were arranged into two spans, with disk 0 and disk 2 in the first span, and disk 1 and 3 in the second span. So, I arranged my disks the same way, with disk 0 as 700 G, disk 1 as 1000 G, disk 2 as 700 G, and disk 3 as 1000 G.
Replacing the disks went successfully, and I had 2 spans, the first was disks 0 and 2, at 700 G, and the second was 1 and 3, at 1000 G.
However, when reconfiguring the array to expand it, it rearranged the spans so it was now disks 2 and 3 in span 0, and 0 and 1 in span 1. Now that a 700 G was paired with a 1000 G, in a mirror, I lost access to the 300 G on the larger disk. (It's like having only 700 G disks in the array.)
How can I fix this situation?
I was thinking of removing disks 1 and 2, to break the array, and then adding them back in reverse order. Would this work?
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by: jk2001Posted on 2008-08-03 at 01:17:59ID: 22146779
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