Linux: Possible to mount 2 RAID-1 arrays as one folder?

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19 Jun 2003
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Hi all,
I have a Ubuntu 6.06 LTS server that has a pair of 300GB SATA drives in it. They are attached into the motherboard sockets, then i used mdadm in Ubuntu to make a RAID-1 array.

The time has come to add some more storage space, so i've bought a pair of 500GB SATA's. I want to use mdadm on these disks to create another RAID-1, then mount it under /home/users.

Is it possible to mount multiple disks under the same mount point, so that you could have an ever expanding folder (e.g. the files are distributed across the various disks that have been mounted there) so i could mount the original 300GB array under /home/users too, or am I talking nonsense?

Cheers,
Matt
 
Thanks for the replies chaps. It seems like the best option then, would be to create the new 500GB RAID-1 array as part of a LVM group, then when setup, copy the data from the 300GB array into it. This would free up the 300GB disks so they could be added into the LVM without worrying about loosing data. Does that make sense?

Matt
 
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