Which application reduces the manual effort to update 500 Dell EMC PowerEdge R750 servers?

A technician needs to perform a RAID controller firmware update from within the Operating System.
The server runs Red Hat Enterprise Linux and is configured with an iDRAC basic license.
Which three steps should the technician take to complete this task? (Choose three.)

A server has the following configuration:
- 5x 1 TB drives configured in a RAID 5 array
- 1x 1 TB as a global hot spare
- Persistent Hot Spare Slot enabled
A user adds one additional 2 TB drive to the existing array using RAID migration.
How much disk space is available to the operating system?

iDRAC9 System Lockdown Mode is enabled.
In addition to the Power cap setting and System power operations, which settings can an administrator access?

What is a requirement to operate GPUs in a Dell EMC PowerEdge R740 server?