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Pegasus2 data copy problems

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James Culbertson
Pegasus2 data copy problems
on Nov 7, 2014 at 1:06:41 am

I am having issues (new in the last week or two) copying from one Pegasus2 R4 8TB (Raid 5) to another of the same make/model (via separate Thunderbolt ports on back of MacPro), and to/from external drives (Firewire, USB or Thunderbolt connections). The RAID 5 setup is stock from the factory. I able to access and edit existing projects, I just cannot copy anything new to the drives or backup anything off the drives.

Copying a large package file 300GB or larger is stopping randomly part way through, sometimes giving an error -50, sometimes just freezing the finder copy pop-up window with no error or other indication. I have to do a power button shut down of the computer to get control back of files on the drive. Smaller files in the 4GB range have copied OK so far.

I have run Disk Utility, Disk Warrior, and the Promise Utility for both drives shows all green checks for system status.

I also tried running Disksomnia too with no change.

I can copy from one external drive to another with no issue.

OSX 10.9.5, 3.5 GHz 6-core Late 2013 MacPro (Cylinder) 32GB RAM


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James Culbertson
Re: Pegasus2 data copy problems - Promise response
on Nov 11, 2014 at 6:26:46 pm

I sent Pegasus a service report for my two drives and they responded:

"One-bit ECC error was detected"

I've replied with a query asking them to give me some advice on what to do about it. ;-)

Anyone else have any words of wisdom?


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