IBM Small J10 Series, Manual

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Dealing with hardware faults
Ensure that you have obtained a replacement module of the same type before removing any faulty
module as described in the Module removal and replacement section.
Important: If the enclosure system is powered up and you remove any module, replace it immediately. If
the system is used with any modules missing for more than a few seconds, the enclosure(s) can overheat,
causing power failure and potential data loss. Such action can invalidate the product warranty.
Important:
Observe applicable/conventional ESD precautions when handling modules and components, as described
in the ESD precautions section. Avoid contact with mid-plane components, module connectors, leads,
pins, and exposed circuitry.
Continuous operation during replacement
ClevOS supports HOT swapping of data disk drives.
If a small disk enclosure is equipped with two or more PCMs, they can maintain power to the system
while a faulty PCM is replaced.
Field Replaceable Units (FRUs) for IBM COS Small Disk Enclosure
See the FRU Guide: https://www.ibm.com/support/knowledgecenter/STXNRM_3.14.5/coss.doc/
fruReference_j10.html
Chapter 5. Troubleshooting and problem solving 31