# Check that the drive is unconfigured
cloudvirt1024:~# megacli -PDInfo -PhysDrv [32:9] -a0 | grep "Firmware state"
Firmware state: Unconfigured(good), Spun Up

# Mark as a global hot spare
cloudvirt1024:~# megacli -PDHSP -Set -PhysDrv [32:9] -a0

Adapter: 0: Set Physical Drive at EnclId-32 SlotId-9 as Hot Spare Success.

Exit Code: 0x00

# Confirm the change
cloudvirt1024:~# megacli -PDInfo -PhysDrv [32:9] -a0 | grep "Firmware state"
Firmware state: Hotspare, Spun Up