Weblog entry #14 for e5z8652
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#14
breaking up disk arrays
Posted by e5z8652 on Fri 17 Apr 2009 at 18:48
I need to break up a six disk raid 5 into a four disk raid 5 and a two disk mirror.
It sure would be nice to be able to tell the raid controller "move all the data on the array onto disks 0-3, then drop 4-5 from the array." It would be even nicer to be able to say "oh, and do this in the background without bringing th server down." It's an IBM ServeRAID 4xl. (Yes, the server is an ancient IBM 342)
I guess I'll have to do it the old fashioned way, with an external USB drive as a temporary storage holder, boot to a TRK CD and use ddrescue to move data around.
It sure would be nice to be able to tell the raid controller "move all the data on the array onto disks 0-3, then drop 4-5 from the array." It would be even nicer to be able to say "oh, and do this in the background without bringing th server down." It's an IBM ServeRAID 4xl. (Yes, the server is an ancient IBM 342)
I guess I'll have to do it the old fashioned way, with an external USB drive as a temporary storage holder, boot to a TRK CD and use ddrescue to move data around.