IBM Power System 9040-MR9 Manual page 47

Figure 20. Disk drive or solid-state drive service indicator locations in a 9040-MR9 system
3. To prepare the system to permanently remove a drive when the system is powered off, complete the
following steps:
a) Turn on the identify LED for the drive to be removed and for the system.
For instructions, see Identifying a part (www.ibm.com/support/knowledgecenter/POWER9/p9haj/
sal.htm).
Use the blue identify LED on the enclosure to locate the system. Ensure that the serial number of
the system matches the serial number to be serviced.
b) Record the position where the disk drive or solid-state drive will be permanently removed. For
example, the drive slot might be P1-D3 or P2-D3.
c) Stop the system. For instructions, see Stopping a system (www.ibm.com/support/
knowledgecenter/POWER9/p9haj/crustopsys.htm).
d) If applicable, open the rack door at the rear of the system.
e) Label and disconnect the power cords from the system unit as shown in the following figure.
Notes:
• This system might be equipped with two or more power supplies. If the removing and replacing
procedures require the system power to be turned off, ensure that all power sources to the
system are disconnected.
Disk drives or solid-state drives for the 9040-MR9 system 33