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Upgrading a RAID1 Array Question.

B

BuGaLoU

[H]ard|Gawd
Joined
Apr 24, 2002
Messages
1,156
I am upgrading my RAID1 array on my files server in a few days from 80 to 160 GBs. I have two 160 GB drives on the way.

I was wondering the best way to transfer the data on the disks to the new hard drive. Could I simply put a 160 in and rubuild the array off the 80GB drive, then replace it with the other 160? Would this limit me to 80 gbs? Any help I could get would be usefull.
 
I dont do raid at all, but i think the disks/partition need to be the exact same size. Wouldn't you be able to remove your 2 80's from the raid, put in the 160's and set up the raid, then just plug 1 of the 80's into a spare ide and go from there. Is it possible to run a raid 1 drive as a standalone, i thought they were just copies of one another. If so, you could plug one into a spare ide slot and get the data off the drive as a normal single drive.
 
BuGaLoU, you were right in your assumption.
Backup everything.
Pull an 80 and replace it with a 160.
Rebuild the array.
Pull the other 80, replace with the 160.
Rebuild again.
You *should* now have a 80GB RAID1 array w/ 80gb extra in Disk Managment.
You can then create another 80gb partition, or attempt something like Partition Tragic and expand the volume to the full 160.

I do find wedoe21's idea though. That would probably work as well. And the data is still on the 80's if it all goes to hell.
 
backup all your data on the drives. Image software will work to another driver or server
Takeout both 80 gig drivers put in 160 gig drives, then rebuild the array and restore the images and files. Very easy. And the best part is you will still have the 2 80 gig drives that you can put back in and rebuild the array if you current drives are a flop
 
if he just restored the image wouldent that give him just an 80 gig array?
 
no the array is built prior to any os or image install. It depends on what image software you use but you can tell it take the space used and apply it to a new drive for the full 160 gb
 
I'd say if that the 80GB raid1 array you have now is just for storage, then I'd do what the other dude said and take both out, set up the 160's, then copy shit from one of the 80's. If you are using the 80's for your os, then I'd say... REINSTALL, MUWHAHAHA!!!
 
i'd say plug the new disks into the raid controller and copy everything over. the other thing to consider is a linux software raid solution. this will give approximately the same performance as a hardware raid1, since there's no parity involved. so you could get the 2 80's on h/w for now and the 2 160's on s/w and then use cpio to move everything over. even if it's ntfs, you should be able to copy everything over.

if you need any help setting this up, ask around on the os forum.
 
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