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Old 09-20-2004, 11:53 PM   #1
DrAx
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can 36GB SCSI used as a mirror for an 18GB SCSI


Can a 36 GB SCSI HDD used as a mirror for an 18 GB SCSI HDD?

thank's a lot.

drax
 
Old 09-21-2004, 04:11 AM   #2
David the H.
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Are you talking about a RAID1 setup (where the same data is mirrored on both drives)? Certainly it's possible. You can set up software raid quite readily in Linux.

I believe it's even possible to partition up the larger drive so that the extra space on it isn't wasted and can be used for other things, but then again, I'm not that familiar with software raid, so don't quote me.
 
Old 09-21-2004, 11:30 AM   #3
scottie4442
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RAID 1

You cannot do disk mirroring, but you should be able to do partition mirroring, or what is called software raid or mirroring. To use partition mirroring you must make sure that both of the partitions are exactly the same size, if they are not then mirroring will not work. Here are a couple of sites that might help with this challenge, software RAID in linux is not the easiest thing you will do, Software RAID and Linux Volume Manager , then this is the official HOWTOs for ATA (IDE) RAID ATA RAID HOWTO and Boot + Root + RAID + LILO . Hope this helps.

Scott Adams

Last edited by scottie4442; 09-21-2004 at 11:33 AM.
 
Old 09-21-2004, 09:26 PM   #4
DrAx
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thank's a lot for all ur helps dude...

for David, yeah.. i'm talking about RAID1 setup. so do u mean that we just need to do the partition mirroring by using Software Mirroring, which doesn't like RAID1 setup, which has to be done on the installation process?

for Scott, if that's the case, then i think partition mirroring is the one for me. but the official site that u gave me is the site for ATA (IDE), is there any differences between the ATA (IDE) setup & SCSI setup? as i'm using SCSI HDD, if u have any information for SCSI (HDD), could u please provide me the link too? thank's again.

drax
 
Old 09-22-2004, 11:46 AM   #5
scottie4442
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SCSI vs. IDE

I must be honest, I have never done software RAID on SCSI, just hardware (On servers and high end workstations). I am not sure if it would be the same for SCSI. I listed the other because it is the easiest way to do RAID for IDE, unless you have one of the new motherboards that will use IDE RAID. Sorry that I cannot be of more help.

Scott Adams
 
  


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