
Witness serial communication................................................................................................................................... 31
Getting Witness host network information............................................................................................................31
Witness host network: iDRAC...................................................................................................................................31
Witness host network: iDRAC GUI...........................................................................................................................31
Witness host network: Redfish................................................................................................................................ 32
Witness host network: RACADM.............................................................................................................................33
Witness host network: Witness host OS............................................................................................................... 33
Witness host network: ESXi..................................................................................................................................... 33
Using the Witness Heart Beat function................................................................................................................. 34
Getting system component versions...................................................................................................................... 36
Getting component version: Witness BIOS...........................................................................................................36
Getting component version: Witness manager (MCU)......................................................................................36
Getting component version: Witness i210 NIC.....................................................................................................36
Getting component version: Witness M.2 FW..................................................................................................... 36
Getting component version: Witness host............................................................................................................ 37
Getting component version: DOSA-W................................................................................................................... 37
Getting component version: Witness host............................................................................................................ 37
Updating Witness MCU: DUP...................................................................................................................................37
DOSA-W version: ESXi...............................................................................................................................................37
Updating system components.................................................................................................................................. 37
Updating the Witness BIOS...................................................................................................................................... 37
Updating Witness BIOS: DUP (Dell Update Package) ...................................................................................... 38
Updating system components..................................................................................................................................38
Updating Witness MCU: DUP...................................................................................................................................39
Updating the Chassis manager................................................................................................................................ 39
Updating Chassis manager: DUP.............................................................................................................................40
Updating Witness host: ESXi....................................................................................................................................40
Updating Witness DOSA-W...................................................................................................................................... 40
Updating Witness DOSA-W: ESXi........................................................................................................................... 40
Chapter 5: Minimum configuration to POST ............................................................................... 42
Chapter 6: Installing and removing system components.............................................................. 43
Safety instructions............................................................................................................................................................43
Before working inside your system ..............................................................................................................................43
After working inside your system.................................................................................................................................. 43
Recommended tools......................................................................................................................................................... 44
XR4000w sled.................................................................................................................................................................... 44
Removing a witness sled blank.................................................................................................................................44
Removing the witness sled....................................................................................................................................... 45
Installing the witness sled..........................................................................................................................................46
Installing a sled blank.................................................................................................................................................. 48
M.2 SSD module................................................................................................................................................................ 49
Removing the M.2 SSD module............................................................................................................................... 49
Installing the M.2 SSD module................................................................................................................................. 50
System battery ..................................................................................................................................................................51
Replacing the system battery................................................................................................................................... 51
System board..................................................................................................................................................................... 53
Removing the system board..................................................................................................................................... 53
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