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This is not a duplicate of Why is my hard drive still full after deleting files?

I have of course attempted all methods mentioned there. Via the terminal I can see nothing listed on the drive. I was able to list all the hidden (.named) folders using ls -a | egrep '^\.' which then showed me the expected hidden folders, all of which I sudo rm -rd I've ran a Verify/Repair with Disk Utility (not sure of the effectiveness on an external RAID) but it had no effect.

I know a solution is just reformat, but what if I had a 10TB RAID and still had multiple terabytes of data? Formatting would not be an option.

This is not a locked files issue, not a trash issue, what seams to be the problem?

How can I free up the (4TB, claimed to still be taken up) space on the empty 5TB Promise VTrak E610f media RAID?

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Why can’t you erase the disk? I did not understand the reason for that. –  duci9y Sep 11 '12 at 8:52
    
@duci9y what do you mean by erase? –  TryTryAgain Sep 11 '12 at 17:38
    
Erase the disk with Disk Utility. –  duci9y Sep 12 '12 at 8:42
    
@duci9y Can you erase only particular data with Disk Utility? I thought it was only entire volumes...which isn't a solution. Like I said, what if I had 10TB of data on the RAID? I just need to clear up mysterious space being taken up. –  TryTryAgain Sep 12 '12 at 18:06
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@duci9y Format == erase. You're talking at cross purposes about the same thing. –  CajunLuke Oct 6 '12 at 13:50
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up vote 1 down vote accepted

This was a production server so I couldn't be too forceful.

Inevitably, after hours, a reboot resolved the issue. Not my favorite solution by any means.

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