Connecting a MagStor LTO tape drive

Install hardware drivers

Check in Apple System Preferences and make sure that macFuse is installed on the Mac.
Connect a thunderbolt cable from the Mac to the tape 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 and click the LTFS button to open the LTFS panel.
If any tape drives are missing then download the correct MagStor hardware drivers.
MagStor driver support page
MagStor have a YouTube video showing the installation process.

If the tape drive is still not visible follow the instructions below to check the hardware.

Note that if there are multiple tape drives connected each one might need a different driver.

Checking hardware devices

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

Check for Thunderbolt devices

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

Check for SAS devices

Make sure the MagStor drive is connected and powered on, now a SCSI Target Device will be visible. This is the SAS tape drive that is inside the MagStor.
If the SAS device is missing, please install the SAS driver as described above.

Older MagStor units used a different internal SAS card. Again check the Install drivers section above.

After rebooting if there is still no SAS device visible then contact support at MagStor for assistance.

Note that the System Information page does not refresh automatically. Click File, Refresh Information or Command + R to refresh the hardware listing.

SAS driver installation

Allow system software in 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, Areca, macFUSE, 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 locally 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 updates to your version of macOS

Files and Folders access

When running YoYotta with newer macOS versions you may see requests to allow access to folders like Documents, Removable Volumes or Network Volumes. Please allow these requests.
Also you can enable access in Files and Folders in the Security tab as shown in the screenshot.

YoYotta does not need Full Disk Access.

Run the YoYotta app

In the log there will a message showing that the drive has been detected. Hardware information for the tape drive and interface 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 the message Update completed OK appears.
YoYotta with a tape drive option will now be able to control this drive.
Select a tape drive and click the cog button to show the tape drive hardware status. The drive internal temperature is shown along with humidity for LTO-9 drives. Make sure there is plenty of airflow around the drive.
It is also possible to label the drives to help idenify which one is which.
Check the Support page to watch a video showing LTFS archiving along with links to all the help topics.