Precautions For Expansion - Oracle Fujitsu SPARC M12-1 Service Manual

Precautions for PSU replacement
Caution - Do not forcibly push the PSU into its slot. Using excessive force may
damage the PSU and server.
There are two PSUs in the configuration. Thus, the system can continue operating
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even if one of the PSUs fails. Do not, however, operate the system for an extended
period while one unit has failed.
When there are multiple PSUs to replace, replace them one by one. If redundancy
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of the PSUs cannot be secured, system-stopped (inactive)/cold maintenance must
be performed.
Precautions for FANU replacement
When there are multiple FANUs to replace, replace them one by one. If
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redundancy of the FANUs cannot be secured, system-stopped (inactive)/cold
maintenance must be performed.
The FANUs have a redundant configuration. Thus, the system can continue
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operating even if one of the FANUs fails. Do not, however, operate the system for
an extended period with one failed unit. Replace any failed FANU immediately.
Precautions for PCIe card replacement
Before replacing a PCIe card, stop the system and remove the PCIe riser from the
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MBU.
Precautions for HDDBP/OPNL replacement
Caution - When removing the HDDBP or the OPNL, be careful not to damage
electronic components such as connectors.
4.3.2

Precautions for Expansion

Precautions for memory expansion
Observe the memory installation rules when you expand memory. For details, see
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"2.2.1 Memory Installation
To mount a 64 GB DIMM, see "Notes on Memory" in the latest version of the
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Fujitsu SPARC M12 Product Notes.
46 Fujitsu SPARC M12-1 Service Manual • January 2023
Rules."