Thunderbolt Pegasus R4 Experience?

Yep. Same problem here...Immediately after installation the Pegasus3 R4 RAID started mounting and dismounting from the iMac all day long every day. Then within 2 weeks the chassis went bad so I replaced it under warranty. Promise refused to pay shipping for the broken chassis to be returned to them and they placed a $699 hold on my credit card for the new chassis until I pay to ship the old chassis back to them. The new chassis doesn't work and their RAID driver won't load on the imac. Spent hours on the phone with their level 1 tech, level 2 tech, and then their "senior engineer"... the Pegasus3 still won't power up all the way nor connect to the imac. The company said they need to "email a design engineer" and he will look at the system report and get back to me". They are not in a hurry to fix the problem. The company states that my data is safe, but we will see if they are correct if they can ever get the Pegasus to work again.

Hello infotech,

We have the same problem here with the new iMac 27" and the Pegasus R6 from Promise. After a while i just pops out of the desktop and you will get the error message from apple that the drive is not removed correctly from the desktop. Yes i know! But i didn't remove the disk!!

It's very onstable it looks like. We are working in Aperture 3.1.3 and thant....plof disk gone! AAAAAAAHHHH!!!!

So we have write to Promise Technology our problem but we didn't get an response! So we don't know what to do now.... this stuff is bought just 1 week ago!

Greetings Levin den Boer.

Thank's for the info infotech.

We shall send the message also to the company here in the netherlands. I'll keep you up to date. Weird isn't!!! That the big rack suddenly just pop's out of your desktop! Very weird... sorry for my english writing, i'll hope you understand me.

Greetings Levin den Boer.

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.

I have two Promise SmartStor raids connected via firewire 800 that keep disconnecting on thier own without warning. It happened on both a pre and post Thunderbolt MacMini. The whole reason I purchased the Thunderbolt R6 was for performance and reliability. Reading this thread is getting me very alarmed.

Wondering if it's an OS X software or general Promise hardware controller issue...

Hello Infotech,

After we send an email to the Promise Technology here in Eindhoven the Netherlands the called us back. And after a while the told us to connect the R6 with the thunderbolt cable to the left port.

So we dit! And unbelievable but the system works perfect now?

So if that's the trick wy worries any futher. It runs perfect on our iMac now. It's online now for several day's and no problems at all now.

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?

I realy don't know! But with 12 Terrabyte i'm secure for at least the next 5 years. And after 5 years there will be something els, what is faster, bigger and better. So i'm not worrying about connecting another drive to that port.

But for other people it's a question.

But i think that the system what drives the disks is build to send and recieve data true the ports in an way that it understand the system. So if you connect an second R4 or R6 those systems recogniza each other and the promise utility will fixed the connection... i think!

Do you use Mac Os X Lion allready? Our R6 is working perfect on our iMac, i can open everything. iTunus, Apertures everyting and the R6 still works no failure connection any more!

But what you say is true i think, it's your iMac who causes this trouble. But were to look??

p.s. do you turn off your R4 when you shuting down?? Wo DON'T!!! The R6 is on for 24/7 it never go's offline, the power stay's on!