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RAID troubles; erased, won't behave now.

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Mark Suszko
RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 1:42:52 pm

I used disk utility to erase my RAID drive as part of an overall system clean-up. Took 3 days to zero it out over the holiday weekend. Now Disk Utility sees the RAID is connected but can't format it, says

POSIX REPORTS: THE OPERATION COULDN'T BE COMPLETED. CANNOT ALLOCATE MEMORY.

No drive icon appears on the desktop either... but disk utility CAN see it there. It just refuses to be partitioned, or set up in any way.


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Rafael Amador
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:13:17 pm

In DiskUtility, select the volume inside the disk and click the blue link (down in the window) "Mounting Point".
rafael


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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:30:18 pm

"Mount" is grayed out from the top menu.


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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:38:57 pm

Grabs of what I'm seeing:











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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:40:09 pm

Any ideas?


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Rainer Wirth
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:43:39 pm

What sort of Raid is it? How many harddisks? What controller?
Why partitioning?

Rainer

factstory
Rainer Wirth
phone_0049-177-2156086
Mac pro 8core
Adobe,FCP,Avid
several raid systems


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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:45:21 pm

4-bay, 3 T Promise Raid enclosure. Only one partition.


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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:51:37 pm

We're trying something else now: erasing each of the 4, 1-T drives in an external dock, one at a time, D.U. says 6 hours apiece to write zeros across them. Guess I can take a LONG lunch today.


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Rainer Wirth
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:53:40 pm

I would swop the drives. Put the drives into other places within the raid. Zero-ing doesn't help.

cheers

Rainer

factstory
Rainer Wirth
phone_0049-177-2156086
Mac pro 8core
Adobe,FCP,Avid
several raid systems


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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 2:58:30 pm

Tried swapping drives around already, no difference.


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Rainer Wirth
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 3:56:48 pm

You can format the drives as single volumes and then put them back into the raid.

cheers

Rainer

factstory
Rainer Wirth
phone_0049-177-2156086
Mac pro 8core
Adobe,FCP,Avid
several raid systems


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Mark Suszko
Re: RAID troubles; erased, won't behave now.
on Sep 4, 2013 at 4:10:46 pm

Yeah, I said that's what we're doing now. It's painfully slow though, taking about 8 hours per drive.


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Tom Matthies
Re: RAID troubles; erased, won't behave now.
on Sep 5, 2013 at 1:44:58 pm

How is the RAID set up? RAID 0? RAID5? RAID10?
Usually if it's RAID 5 or 10, it takes a different utility than the basic Apple Drive Utility to format the drives correctly for redundancy. Did you check with the manufacturer on their procedure to format the RAID? I have several RAID5 G-SPEEDes units and I format them with the G-Tech supplied drive utility software to create a RAID5 array and not the normal Drive Utility provided by Apple.
Just a thought.

E=MC2+/-2db


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