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WD Green's in RAID5?

post #1 of 16
Thread Starter 
I've heard mixed things about this. I've got 3x WD Green 2TB drives (WD20EADS). Can these safely run in a RAID5 array? I've got 2 in a RAID1 right now with an external backup, but I've only got 5GB free now, and I desperately need more space. Was hoping I could throw my external in, put it in a RAID5 and it'll work.

I know they have a problem with "higher levels" of RAID. Is a RAID5 a higher level where I'll have problems?
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post #2 of 16
They work just fine in raid 5. I build backup nas's with em all the time.
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post #3 of 16
Yes. They will work fine. BTW I hope you got your SATA ports down, thanks to my help.
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post #4 of 16
Quote:
Originally Posted by csm725;15463794 
Yes. They will work fine. BTW I hope you got your SATA ports down, thanks to my help.

Sounds like your begging for rep to me...
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post #5 of 16
*You're.

And yes, I am 99% sure they will work fine as long as your OS can handle a 4TB RAID array, and as long as your storage controller can handle RAID 5.
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post #6 of 16
I thought the green drives fell out of a bunch of RAID arrays. This is great news if true because I was looking to build a box with a RAID 5 array of 4 GP drives (EARS).
    
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post #7 of 16
Thread Starter 
Quote:
Originally Posted by RonindeBeatrice;15463861 
I thought the green drives fell out of a bunch of RAID arrays. This is great news if true because I was looking to build a box with a RAID 5 array of 4 GP drives (EARS).

That's what I thought too, that's why I asked. I knew they did with HIGHER levels of RAID, but not sure if a RAID5 is considered a "high level".
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post #8 of 16
Green drives can fall out of RAID arrays for two reasons.

1) They take too long to spin up. This can be fixed in the BIOS of the storage controller and/or the firmware of the drive.

2) The hit an error while reading or writing from/to the drive platters. A drive can take up to 30 seconds to recover from this, which is too long for many RAID controllers; they will drop the drive.


EDIT:

The WD Greens (non-RAID Edition) are susceptible to dropping out of arrays. If you want to go the WD route for RAID 5, get the RE4-GP units.
Edited by parityboy - 10/28/11 at 6:57pm
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post #9 of 16
*deleted*
Edited by parityboy - 10/28/11 at 6:55pm
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post #10 of 16
Thread Starter 
Can anybody confirm what parityboy is saying, or will they work fine in RAID5 on my sig rig?
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