Chapter 5: Replacing Server Components; Field-Replaceable Units; Hot-Swappable Components - Hitachi NAS Platform 4000 Series Hardware Reference Manual

Chapter 5: Replacing server components

This section describes which components are field replaceable units (FRUs) and how to
replace those components. The section also describes which components are hot-
swappable.

Field-replaceable units

Some components are field-replaceable units (FRUs).
Important: The FRUs can only be replaced by certified engineers. These
components are not customer replaceable units (CRUs).
FRUs include the following components:
Hitachi NAS Platform or Hitachi Unified Storage File Module servers
■
Bezels
■
Hard disk drives (HDDs)
■
Power supply unit (PSUs)
■
NVRAM battery backup packs
■
Fan assemblies
■
SFP+ port adapters (HNAS 4060, 4080, and 4100)
■
Note: Main Motherboards (MMBs) and Main FPGA Boards (MFBs) are pre-
installed boards that perform functions essential to the integrity of the
server. If there is an issue with the MMB, or the MFB (typically), you must
return the server for repair. MMBs are not FRUs, and, typically, MFBs are also
not FRUs. However, an MFB may be replaced under certain specific
circumstances. Contact Hitachi Vantara Support Connect to determine
whether your MFB can be replaced as a FRU.
Some components are also hot-swappable. See
page 63) for details.

Hot-swappable components

Some components are hot-swappable. Such components can be changed without
shutting down the server.
Hitachi NAS Platform and Hitachi Unified Storage Series 4000 Hardware Reference
Chapter 5: Replacing server components
Hot-swappable components (on
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