How to Identify the location of Sys1 and Sys2 System drive slot on PA-5450 MPC card?

• Following the hardware reference guide to replace the faulty system drive for PA-5450 platform. 
• How to Identify the Sys1 and Sys2 System drive slot on PA-5450 Management Processor Card (MPC)?

• PA-5450 Chassis
• Supported PAN-OS
• System drives

1. Use CLI commands to Note the Serial Numbers of the Drives

admin@PA-5450> debug system disk-smart-info disk-1

smartctl 7.1 2020-04-05 r5049 [x86_64-linux-4.18.0-240.1.1.20.pan.x86_64] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Intel S4510/S4610/S4500/S4600 Series SSDs
Device Model:     INTEL SSDSCKKB480G8
Serial Number:    PHY018601L8480K
LU WWN Device Id: 5 5cd2e4 155d1811b
Firmware Version: XC311132
User Capacity:    480,103,981,056 bytes [480 GB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    Solid State Device
Form Factor:      M.2
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)

admin@PA-5450> debug system disk-smart-info disk-2

smartctl 7.1 2020-04-05 r5049 [x86_64-linux-4.18.0-240.1.1.20.pan.x86_64] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Intel S4510/S4610/S4500/S4600 Series SSDs
Device Model:     INTEL SSDSCKKB480G8
Serial Number:    PHYH018603PM480K
LU WWN Device Id: 5 5cd2e4 155d17cb0
Firmware Version: XC311132
User Capacity:    480,103,981,056 bytes [480 GB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    Solid State Device
Form Factor:      M.2
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)

2. Shutdown Chassis and and remove MPC. Refer How to replace / access a PA-5450 MPC
3. Note the Serial number of the disk and compare it with output from the commands 

4.  You can identify the correct slot for Sys1 and Sys2 with Serial numbers of the Drives Now