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Author Topic: RAID-1 between a 1.5Tb drive and a 2Tb drive  (Read 3423 times)

dmnc_

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  • Posts: 9
RAID-1 between a 1.5Tb drive and a 2Tb drive
« on: October 23, 2010, 04:22:36 PM »

I suspect one of my Seagate drives in my first 323 is actually beginning to fail. It's been reported as "removed" a couple of times, but every time I scan the disk it claims to work perfectly, and the rebuild always works. I don't wanna have to rely on that disk though so I'm gonna replace it, but maybe I should replace it with a bigger one that's low-energy and 5400RPM instead so when the other fails I'll have a bigger NAS. Will the RAID work with different sized disks until then? And will it let me make a non-raided volume of the extra .5Tb?
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gunrunnerjohn

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Re: RAID-1 between a 1.5Tb drive and a 2Tb drive
« Reply #1 on: October 23, 2010, 05:32:34 PM »

It'll rebuild the RAID on the 2TB, but it'll only be a 1.5TB volume and the 500 will be unused.  I'm not sure you can use that at all on this NAS, never tried it.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

fordem

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Re: RAID-1 between a 1.5Tb drive and a 2Tb drive
« Reply #2 on: October 24, 2010, 11:13:43 AM »

With the early firmware versions, you would lose the 500GB "remainder", but I believe later ones allow it to be used as Volume_2, unfortuately, I have no idea which version that was introduced with.
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RAID1 is for disk redundancy - NOT data backup - don't confuse the two.

gunrunnerjohn

  • Level 11 Member
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  • Posts: 2717
Re: RAID-1 between a 1.5Tb drive and a 2Tb drive
« Reply #3 on: October 24, 2010, 04:59:49 PM »

I've never tried it, so I can't say, I just know that the RAID will be 1.5TB. :)
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.