2030 Views 6 Replies Latest reply: Sep 18, 2011 5:29 AM by pgf
Some cases may have a toggle switch or jumper.
What you should be doing is talking to OWC.
Some cases don't support 3TB volumes and show up as 2.2TB.
When I saw the thread title, I actually assumed it was OWC RAID5 w/ 4 drives.
You aren't trying to add the two cases into a single array, for one thing, you don't want to daisy chain, and for another, even the WD Green 64MB cache are faster, faster than FW800 interface (though that should not affect total capacity).
Some people use Disk Utility to create the RAID. In which case all 2 or 4 drives would have to be seen as 4 unique drives.
Mixing two brands or models into one array is never a good idea. And not all Green drives work as RAID or at least not supported.
Not mixing drives! Each enclosure has a matching set of drives (one enclosure has identical WD drives and the other enclosure has identical Seagate drives). I now see why you would think it was the 4 bay enclosure. It made my short list but this was somewhat more cost effective.
These enclosures do in fact have 3 jumpers. There is a 3rd jumper that seemingly does nothing, in fact the provided instruction do not mention if this jumper should be on or off. I thought I had tried it in either position, turns out perhaps I did not. I did email OWC last week, they just emailed me back and said to set that 3rd jumper to ON. I flipped the switch and everything is now hunky dory. All 4TB visible no problem.
I'm just transferring some data over from one to the other but then I'm planning on running some benchmarks to see which of the 2 is faster, if at all.
Thanks for the responses.