We have a server with a large Ultra320 SCSI connected 12 bay Raid unit. It is connected with an ATTO UL5D card. The drivers will not load on Yosemite. Does anyone know of a card that would work as a replacement with drivers?
I got the ATTO UL5D card to work fine under Mountain Lion, but nothing passed that.😢
I have exactly the same issue. A very expensive SCSI Raid and an Atto UL5d which I need to use on an iMac 5k. I haven't found any other cards and I don't want to take the risk buying an PCIe to Thunderbolt chassis without the hope that it will actually work. Unless a 3rd party writes the drivers for it, I don't think there is much hope.
I had the system working fine on Lion - haven't tried mountain lion yet.
The next issue is that if you take the risk and replace the Raid with a thunderbolt raid, you then read that Intel might perhaps discontinue Thunderbolt because it hasn't taken off so much on Windows PC. Does that mean a Thunderbolt Raid purchase now and a future Raid purchase after Thunderbolt? I don't like purchasing Raids. 😟
Seems to be working fine with the latest available ATTO drivers for the UL5D card. (Maybe you'll need to register for downloads.)
But you have to disable code signing check for kernel extensions from Terminal app with:
sudo nvram boot-args="kext-dev-mode=1"
For me it seems to working fine on the last Xserve with OS X Yosemite v10.10.1 and SCSI Backup Library.
following on to Sunni's post.
i now have the last available ATTO driver for UL5D card (osx_drv_epicu320_443) running fine under Yosemite 10.10.3.
George
Hi Sunni,
This is useful information, but before I go ahead and attempt the upgrade and this workaround, can you tell me what is the impact of 'disable code signing check for kernel extensions'. I guess it's there for a reason!
Thanks,
Andrew.
I used Sunni's tip and got my UL5D card and 2TB Ultra320 RAID working on a Mac Pro with the most recent (osx_drv_epicu320_443) ATTO driver and 10.10.5. So far, all is good.
A tip of the hat to Sunni for that lifesaver tip.
Thanks,
David
You sir, are a life saver!! Thank you.
Dear Sunni, you are indeed a lifesaver. After several month still on mavericks I was now able to upgrade to 10.10.5. I did a little research about the above mentioned sudo command.
It is a security feature, so everyone should be aware of what the command will do.
Thx again Sunni!
Ultra320 SCSI card support
