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Slow write speeds with WD Thunderbolt Duo

N

nurivo

macrumors member
Original poster
Jul 4, 2008
32
1
Today I received my new Western Digital Thunderbolt Duo (4TB), unpacked it, connected it and ran a few initial tests. In RAID 0 configuration, I have less than 100MB/s Write speeds with the Aja Kona System Test. The Blackmagic Disk Tests gets pretty much the same, slow results.

From all I have read, it should be closer to 200MB/s.

I have tried recreating the RAID, switching the ports. No change.

Any ideas as to what the reason could be? What I could've misconfigured?
 

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N

nurivo

macrumors member
Original poster
Jul 4, 2008
32
1
Interesting: Now I have made a simple timed-by-hand test and copied a ~6GB file in ~25 seconds (~240MB/s)

Are both Aja Kona and Blackmagic reporting incorrect write speeds?
 
Last edited:
braddicted2mac

braddicted2mac

macrumors member
Dec 5, 2012
88
0
Canada
I had a WD ethernet 6tb External, and I hated the write speeds. It used to crash on me all the time, only had 2 firmware updates over the course of 2 years and none solved the issue.

That's why I went to a LaCie product I wasn't take the chance so far I enjoy the harddrive. I'll use the Ethernet one for just backups, and the thundebolt LaCie for my Media
 
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