Connecting an mTape LTO drive

The mLogic mTape has built in Thunderbolt 3 ports allowing direct connection to a Mac

The new Apple Silicon M1 Macs have great performance and YoYotta runs well.
However SAS, FibreChannel and Thunderbolt LTO drives require new drivers for M1 Macs.
So these Macs will not support LTFS workflow until new drivers are released.
Check for updates with the SAS or FC interface manufacturer.

Setup a new mTape drive

For macOS 11, go to the ATTO.com website and download and install the H608 SAS card SAS driver.
Don't manually install any other drivers or frameworks.
Connect a thunderbolt cable from the Mac to the mTape drive. Power on and then wait a few minutes for the drive to boot up. There is an LED display on the drive that will cycle through a boot sequence. Open the YoYotta app. Now click the LTFS button on the toolbar of YoYotta. This will check and prompt to download all the LTFS frameworks needed.
Wait until the message Update completed OK appears.
YoYotta LTFS will now be able to control this drive.
Check the Support page to watch a video showing LTFS archiving along with links to all the help topics.

If the drive does not appear then follow the instructions below.


Checking hardware devices

To check that the Mac can see the mTape drive hold the alt key on the Mac keyboard, click the Apple Menu and select System Information...


Check for Thunderbolt devices

If the mTape is not shown then try reconnecting the cable and power cycling the unit.
If there is a mTape thunderbolt interface, then the next step is checking for the SAS tape drive.


macOS System Security

When drivers are installed on a new system, you will need to approve the new System Software. New installs of system software from YoYotta, ATTO, OSXFUSE (developer is Benjamin Fleischer) and other drivers may need approval.
You will see a message like this saying System Extension Blocked
Open the Security & Privacy page in Apple System Preferences, unlock the padlock and click Allow to enable the System software to load.

You must click the Allow button directly on the Mac, clicking using remote screen sharing will not work.
If the Allow button is not shown then reboot your Mac, try again to use an LTFS or TAR tape (which will fail) and then check the Security & Privacy page again.
Also ensure that you have the latest macOS 10.13.6, 10.14.6 or 10.15


Check for SAS devices

Make sure the mTape drive is connected and powered on, now a SCSI Target Device @ 0 will be visible. This is the SAS tape drive.
If the SAS device is missing, please check that the ATTO H608 driver has been installed. If it has then contact support at mLogic for assistance.
The System Information page does not refresh automatically. Click File, Refresh Information or Command + R to refresh the hardware listing.


Open YoYotta

In the log there will a message showing that the drive has been detected. The SAS card driver version, firmware level and PCIe speed will be shown.


Open LTFS panel

Now click the LTFS button on the toolbar of YoYotta. This will check and prompt to download the LTFS frameworks needed. Wait until this completes, then open the panel again.
YoYotta LTFS will now be able to control this drive.

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