Replacing A Fan Assembly - Hitachi 2000 Series Hardware Reference Manual

8. Insert the power cord.
9. Switch the power to the ON position on the replacement PSU.
Caution: PSU models 600 and 610 are physically interchangeable, but may not be
mixed during normal operation of a High-performance NAS Platform. If necessary,
PSU models 600 and 610 may be mixed in a High-performance NAS Platform only for
the minimum amount of time necessary to perform a hot-swap of a failed PSU (up to
72 hours). If one PSU in a High-performance NAS Platform must be replaced, and you
are replacing it with a different PSU model, replace both PSUs instead of operating
with different models of PSUs in the same High-performance NAS Platform.

Replacing a Fan Assembly

Fans provide for front-to-back airflow to be consistent with the storage system
components. The High-performance NAS Platform continues to operate following the
failure of a single fan and during the temporary removal of a fan assembly for
replacement. A failed fan must be replaced as soon as possible.
The High-performance NAS Platform fans are contained within three assemblies, which
are located behind the front fascia and are removable from the front of the High-
performance NAS Platform. All High-performance NAS Platforms have three fan
assemblies, but some models contain three fans (one fan per assembly), while other
models contain six fans (two fans per assembly).
The High-performance NAS Platform's cooling airflow enables the system to operate in an
ambient temperature range of 10°C to 40°C when mounted in a storage cabinet with
associated components required to configure a high-performance storage system. The
storage system administrator is responsible for ensuring that the ambient temperature
within the rack does not exceed the 40°C operating limit for the High-performance NAS
Platform.
Caution: If a fan has failed, replace the fan assembly as soon as possible to avoid
damaging the High-performance NAS Platform.
Replacing a Fan Assembly
1. Remove the High-performance NAS Platform front panel by releasing the two
latches (one each side).
36 Hitachi High-performance NAS Platform