Which version of macOS ?
YoYottaID supports Apple computers running macOS 10.9 Mountain Lion or newer.
macOS 10.11 or newer is recommended as there are many improvements to the system frameworks.
macOS 10.12 supports these computers
MacBook (Late 2009 or newer)
MacBook Air (Late 2010 or newer)
MacBook Pro (Mid 2010 or newer)
Mac mini (Mid 2010 or newer)
iMac (Late 2009 or newer)
Mac Pro (Mid 2010 or newer)
macOS 10.11 or 10.10 supports these computers
MacBook (Late 2008 Aluminium or newer)
MacBook Air (Late 2008 or newer)
MacBook Pro (Mid/Late 2007 or newer)
Mac mini (2009 or newer)
iMac (2007 or newer)
Mac Pro (2008 or newer)
Most 10.7 and 10.8 systems can be updated to 10.11 or 10.10.
Some older computers like the MacPro1,1 and 2,1 do not support a newer macOS.
We would suggest using a newer computer like a Mac mini and move your ATTO SAS or FC card inside a Sonnet Thunderbolt enclosure.
A good way to upgrade is to use a new drive or a second partition on an existing drive.
If you have a fixed drive inside your Mac then ensure you use a program like SuperDuper to backup the entire boot drive to an external drive. Then reformat the internal drive.
This gives you a clean install, but doesn't destroy the data on your old system. So if needed you can boot the old macOS or copy across items that are missing.
Even if you don't want to update to a new major version 10.12 or 10.11, we would recommend that you run the latest minor version. For example if you are on 10.9.2 update to 10.9.5.
Please get in touch with firstname.lastname@example.org if you need any help or have further questions.