Fillers
A filler is an empty metal or plastic enclosure that is installed at the factory or in the field into a server component slot that does not contain a functioning component. The fillers ensure proper airflow through the system. Depending on the component configuration, the server can include the following types of fillers:
Drive filler
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PCIe card filler (covering back panel, not filling the connector slot)
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Fan filler
 | Caution - When you remove a component while the server is connected to power, insert a new component or filler within 60 seconds to ensure proper system chassis cooling. After you complete cold-servicing, ensure that all fillers are in place before connecting the server to power. |