Thunderbolt Pegasus R4 Experience?

What a disaster.

Since launching Sierra 10.2 my Mac will not communicate with my Pegasus 2 R4. I have spent 2 days on the phone with Apple support, which is a bit of a lottery, some good people some, not so much (The line times out and you do not get to speak to the same person twice). They concluded the problem was with my Pegasus 2 R4. I contacted my supplier RENTARAID Neil was as helpful as he could be, but eventually directed me to the 'Promise support centre'. The first time I tried I was advised, curtly, to phone USA (from Scotland). Eventually I found my way through the "support centre" website and found an e-mail address in Holland. Joris, our supporter, went through all the things that we had already been through and concluded, again after two days, that our two and a half year old device was broken and that we should buy another one. Guess what! That is not going to happen. We thought we were buying the best but it seems we have bought the worst. This was to be our failsafe device. - What a waste of £940.95!

David, it's all detailed in this thread. https://discussions.apple.com/thread/3370764

I'm getting 500MBps write and read(Raid 0) and it's way faster than a SSD drive.

What happend after 48 hours than?? The system crashes?

We shall keep you up to date how the things are going with the company from Promise Technology.

It's great that switching to the left fixed it, but what does that mean when you need to attach another drive to the right one? Will that drive basically experience the same issues?

Wow, indeed! But so far so good i read! With this good news you are now able to realy make use of the R4. Have fun with it.

Just to confirm, you are attaching to to iMac?

@chiudesign yes, on the new iMac

@infotech 24 7 We are not using any USB hub or iPod cable on this iMac. It's a standalone workstation.

We certainly will do that!! We will keep you guy's up to date!

Return of "faulty" R6 unit to Apple now arranged - they were extremely helpful as usual.

Just deleting my data in preparation for returning the unit when I noticed a warning on the control panel: fan speed too slow .... perhaps it is just as well I am returning it.

Excellent, please let us know as soon as they come back with an answer!

This is utterly frustrating and dangerous, who knows what issues this is causing to our projects!