We recently upgraded our StorageGRID environment to 11.5. As part of this I thought it would upgrade the firmware on the storage nodes (SG6000) but it doesn't appear to. The firmware version on the storage nodes is 8.62. We recently added another storage node which is firmware version 8.71. We want to upgrade the firmware on the original nodes to 8.7 but I can't find any steps to do this. The documentation discusses upgrading drive firmware but this doesn't seem to be the same thing. Or do I have to upgrade the SANtricity OS on the nodes? The version numbers don't seem to match up. Or did I miss a step in the 11.5 upgrade?