Customer-Replaceable Units

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The following table lists the customer-replaceable units (CRUs) in the server and directs you to the replacement instructions.

CRU	Serviceability	Description	Replacement Instructions
Storage drive (HDD, SSD)	Hot	Storage drive configurations can comprise both hard disk drives (HDDs) or solid state disk drives (SSDs).	Servicing Storage Drives
Power supplies (PS0-3)	Hot	Four fully redundant AC-powered power supplies.	Servicing Power Supply Units (PSUs)
PCIe Cards	Hot service as part of DPCC, which must be removed first.	Optional add-in cards that can expand the functionality of the server.	Servicing PCIe Cards and the Dual PCIe Card Carriers (DPCCs)
Dual PCIe card carrier (DPCC)	Hot	Each DPCC holds two PCIe cards.	Servicing PCIe Cards and the Dual PCIe Card Carriers (DPCCs)
Fan modules (FM0-7)	Hot	Eight fan modules for cooling the server components	Servicing Fan Modules and Fan Frames
Fan frames	Cold	Two fan frames contain four fan modules for cooling the server components.	Servicing Fan Modules and Fan Frames
Memory (DIMMs)	Warm	Add or replace memory modules located in CMODs.	Install a DIMM and Remove a DIMM
External USB flash drive	Hot	The SMOD includes two external USB ports.	Servicing System Module (SMOD) Components
System Clock Battery	Cold	3V Lithium Coin Cell Battery that powers the CMOS BIOS and real-time clock located in SMOD	Replace the Real Time Clock (System) Battery
HBA battery	Cold	The HBA battery provides backup power for the internal HBA card.	Replace the HBA Battery