Multiple RAID Volumes

[Markus Hitter]

Am 30.04.2007 um 16:06 schrieb Matt Elliott:

> As for the original poster's question. I've never used Apple's  
> software based RAID tools so I don't know how to do what you want.  
> (But what you want to do is totally reasonable and should be  
> supported)

As Disk Utility's GUI isn't as consistent as it could be, I moved  
forward to the command line, joining pairs of equal partitions. Like  
with the GUI, I got errors from the third RAID on, e.g.:

> Hughes:~ myname$ sudo diskutil createRAID mirror "Musik" "Case- 
> sensitive Journaled HFS+" /dev/disk0s13 /dev/disk2s13
> Preparing partition 'disk0s13' for RAID
> Adding disk 'disk0s14' to new RAID set
> Preparing partition 'disk2s13' for RAID
> Adding disk 'disk2s14' to new RAID set
> Creating RAID Set (disk0s13 , disk2s13 )
> Bringing RAID partitions online
> Waiting for new RAID to come online "964166A6-xxxx-4B0F-8087-xxxxxx"
>
> Error -9983 encountered updating or creating raid on disk

It turned out, however, each of the RAIDs were created successfully,  
only the (unavoidable) formatting of a new RAID failed.  
"Erasing" (formatting) that half-finished RAIDs again worked around  
this failure, everything looks fine now.


Cheers,
Markus

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Dipl. Ing. Markus Hitter
http://www.jump-ing.de/