Hitachi 3080 G2, Hardware Reference Manual

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LEDs Meaning
Red
If this LED is on immediately after installing a new hard disk, it indicates that
the RAID configuration for the server is being rebuilt. The LED will turn off after
the RAID configuration is restored. The amount of time it takes for the RAID
configuration to be rebuilt after a new disk drive is installed depends on the
amount of user and system configuration data stored.
If this LED is on during the course of normal operation (not after installing a
new hard disk), either the disk has failed or the server’s RAID configuration has
been degraded.
Fans
The server features dual hot-swappable fan assemblies. The fans provide for
front-to-back airflow to be consistent with other storage system components.
The server’s cooling airflow enables the system to operate in an ambient
temperature range of 10°C to 35°C when mounted in a rack or cabinet with
associated components required to make up a storage system. The storage
system administrator is responsible for ensuring that the ambient
temperature within the rack does not exceed the 35°C operating limit.
The server continues to operate following the failure of a single fan and
during the temporary removal of a fan for replacement. Replace a failed fan
as soon as possible.
Caution: If a fan has failed, replace the fan as soon as possible to reduce the
amount of time the server is operating with reduced airflow.
The fans are contained within two assemblies, each containing a single
variable-speed fan. Fan assemblies are located behind the front bezel. Each
fan assembly is secured to the chassis with two thumbscrews and a blind-
mate electrical connector; no tools are required to remove or install a fan
assembly.
Two fan status LEDs provide fan status information. These LEDs are located
behind the bezel on the right side of the chassis.
Hitachi NAS Platform server components 45
Hitachi NAS Platform 3080/3090 G2 Hardware Reference Guide