What is the difference between a rolling upgrade and a simultaneous upgrade?
A. A simultaneous upgrade reboots all nodes at the same time after upgrade. And a rolling upgrade will
reboot each node in sequence after upgrading it.
B. A rolling upgrade will upgrade OneFS and then the firmware. And a simultaneous upgrade does both at
the same time.
C. A rolling upgrade requires a reboot confirmation to proceed while a simultaneous upgrade starts with the
D. A simultaneous upgrade reboots all nodes before the upgrade and a rolling upgrade reboots each node