Thunderbolt Pegasus R4 Experience?

Hello everybody.

Today we had an directlink with Promise Technology Inc in Milpitas with the program TeamViewer. The login to our system to see if the can find any shell logs with the unmounting problem.

We have now two Pegasus R6 types running on our iMac and one R6 unmount itself again today. So that's why Promise directly logon in our system to see what the issue is.

I realy don't now what the do, because it's all in the terminal with shell comands. So let's hope that the find something and the hope also that this problem is there problem, because the will fixed it than. Until now it just searching for the problem in the systems.

So the service we get is perfect and we hope also that this problem will be fixed soon.

Greetings from the Netherlands, Levin den Boer.

Photopress Agency LDB Production

http://www.fotodatabank.nl

Thank you for keeping us up to date with your progress with Promise. I was on the verge of buying one of these but the posts here have obviously made me hold off. I desperately need this kind of unit though possibly not as much as you all desperately need a solution. I hope that the problem is fixed soon for all of you. I look forward to your next update. Thanks again for posting.

Wish I'd found this thread before I bought my new System, Macbook pro, thunderbolt 27" display and R4 Drive, it has ejected 7 times this morning.

Tried bypassing monitor, same problem, different cable, same problem, just swapped to second r4 thunderbolt port, seems ok at moment but not confident.

Spoke to promise support who gave impression it was unusual problem!!!, hard to believe when you see the thread above. Don't think they'll sell many more of these if problem is not sorted urgently.

Problem is there's no real way to determine the extent of the problem since the only people who appear on this thread are those having this issue. I was one of the first to purchase an R4 along with my new Mac mini and have not experienced a single disconnect/unmounting. Just thought I needed to mention that for the sake of perspective.

Dear all...

As previously stated we have a Pegasus R4 (4x1TB) connected to a Mac Mini (5,2) with all the latest updates to a clean installed Mac OS X 10.7.2.

We have seen random disconnects at times and when that happens the Thunderbolt "Link Status" is changed from "2" to "4294967295".

The above status change has now been confirmed by Promise US as a hardware related fault - possibly related to the Apple Thunderbolt cable.

And now for the really interesting part...

We can now reproduce the disconnects reliably by having a mobile phone (GSM)

near (10 to 20 cm) the Thunderbolt cable, and give the phone a call - instantaneous disconnect.

By moving the phone even closer (5 cm) the disconnects appear even without a call being made.

We tried this with several different phones - same result.

We will try a different Thunderbolt cable later this week to see if the problem persists.

In the meantime - check your phones...

/U

Infotech 24 7, the iPhone 4S supports the following:

UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz), GSM/EDGE (850, 900, 1800, 1900 MHz) and CDMA EV-DO Rev. A (800, 1900 MHz).

Possibly only one of the above frequency bands are responsible for the Thunderbolt interference. In our case it would be either GSM 900Mhz or GSM 1800MHz.

The effect are more pronounced at the far end of the cable - just holding the phone in front of the RAID making a call will result in an instantaneous disconnect.

/U

Attempted to recreate with the phone this morning with a camera running to capture the fault and disc won't unmount at all. Typical!!! I did install ios5 to iphone last night, thats the only thing that's changed.

Keyvid, thank you for posting the video - that is the exact behavior we are seeing here.

We have now been in contact with Promise EU - they were not able to duplicate this failure with their RAID-system.

We will however receive a replacement RAID later this week as well as a new Thunderbolt cable, this will hopefully give us the opportunity to pinpoint the faulty part.

/U

Just off the phone with Apple EU - they have previously been notified about the disconnects. They have now been given the info regarding the mobile phone interference. Apple engineers are still investigating the problem at this point.

Apple EU have also been informed about this forum thread and they are actively monitoring it from now on.

/U

Quick update…

Got a new Promise Pegasus R4 RAID - same kind of disconnects.

Spoke with Promise EU - they have now been able to duplicate the failure with their RAID-system.

Spoke with Apple EU - they will ship a new Thunderbolt cable to test early next week.

/U

I wonder if it's the cable. I've had mine for a few weeks now, on 24/7 and has up to 3 iMacs and a MacBook pro access at any given time and even by all macs at the same time with no disconnects. I do a ton of writing to the R4 unit.

Mine is in Raid 10 and my only complaint is that it's not very fast in Raid 10. I have to work out a new backup system and hopefully get it in Raid 0 but my data is data I can't afford to lose. I'm only getting about 120-130MBPS copying a 5GB file....only twice as fast as my FireWire HD.

We can now confirm that the mobile phone interference and the subsequent disconnects are related to (at least but not excluding other sources) the GSM 900 MHz band. We tried an old GSM 900 only phone and the error is still present.

We have also tried DECT-phones (1.88-1.90GHz) as well as WiFi b/g/n transmitters (2.4GHz and 5.0GHz) - none of those seem to affect the Thunderbolt data link.

/U