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GRaid 2

T

TheStu

Moderator<br>Mobile Devices & Gadgets
Moderator
Not sure if this is the right place for this or not, but here we go.

A few months ago, I found a brand new, barely used GRaid2 Enclosure at the local computer shop for $30, so I picked it up.

I dropped in 2 500GB drives that I had laying around (that I didn't realize at the time were different) and it was working alright for a while. Recently I encountered a bunch of corrupted files, and my OS (OS X 10.5) could not repair the file system (HFS+) so I had to pull the data off.

My question is 3 fold.

After opening it, I discovered that I had a 500GB WD Green and a 500GB Seagate 7200.10 in there. The Green is a variable speed 5400-7200 RPM drive so could that have caused my problems?

If I do a full format in Windows, this will isolate bad sectors correct? If yes, do they stay isolated if I then reformat it in OS X?

Does anyone know if I can increase the capacity? I figure, why buy 2 new 500GB drives (if it comes to that) for $55 a piece when I can get a pair of new 1TB drives for about $70 a piece. Sure, its $30 more but it is double the space.
 
After opening it, I discovered that I had a 500GB WD Green and a 500GB Seagate 7200.10 in there. The Green is a variable speed 5400-7200 RPM drive so could that have caused my problems?
Click to expand...

In theory it shouldn't cause any data corruption issues, it would likely cause the array to operate only as fast as the slower drive but that should be it. Although, without knowing how the firmware in the enclosure does it's RAID thing it's impossible to say anything definitive. That's a big reason why I don't like closed, black-box solutions. When something odd happens you can't definitively figure out where the problem lies.

If I do a full format in Windows, this will isolate bad sectors correct? If yes, do they stay isolated if I then reformat it in OS X?
Click to expand...

Again, depends on the enclosure's firmware. Since it's presenting 1 drive format/chkdsk doesn't get to address the real, physical sectors of each device. The drives themselves will reallocate any sectors they see as bad, however once it's out of spare sectors it'll just filter the errors up to the enclosure firmware and who knows what it does with them.

Also, NTFS records bad sectors internally and that won't carry over to any other filesystem. So if you reformat the drive HFS+ you'll need to do another badblock check during that format as well.
 
Well, what I am going to do tonight is put each drive into my system individually, wipe both and then run checkdisk on both to see if either one has bad sectors.

See, the problem is that I have 5 hard drives, and only 4 SATA connectors on the mobo.

Buying a new mobo is not a real appealing option since I run hackintosh and therefore my selection is limited, and to get one with 6+ SATA ports would cost about the same as just getting 2 matching drives that I know will work in the enclosure.
 
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