It is my understanding that you can mix drives as long and they are all the same type ZCS or BCS drives. I currently have a mix of 36GB and 72GB drives in a volume. when you add a larger drive to the raid set that drive becomes the parity and moves the smaller (old) parity drive to a data drive.
Steven ----- Original Message ----- From: "Stephane Bentebba" stephane.bentebba@fps.fr Cc: toasters@mathworks.com Sent: Wednesday, February 12, 2003 5:21 AM Subject: Re: Moving files from qtree up to a volume
Peter D. Gray wrote:
Is there a way to remove a disk from a volume permanently. I want to move from 18GB drives to 36GB drives and I was hoping to do it with no downtime by removing the 18Gb drives one at a time and replacing with 36GB drives.
Possible or is there a better way?
Regards, pdg
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you can't replace a 18g disk by a 36g disk : if u remove a 18g disk with a 36g spare available, the filer will reconstruct the 18g on the 36g but formatting it as a 18g I mean your 36g wont give you 18g extra space. if u want to migrate your data from a 18g based volume to a 36g based volume, you have to use migration utility u can't simply 'fail'/'remove' 18g disks and make them reconstruct on a bigger spare disk i can stat as migration tools :
- volcopy (turn off cifs and nfs while copying at max speed of 36g/hour)
- ndmpcopy (work great but watch out for non compatible unix filenames)
- snapmirror : the best solution (no downtime, no perm or filname tricks)
bye