IBM TotalStorage SAN256N Director 2045-N16, Руководство по установке и обслуживанию, Страница: 34 / 157

SAN256N Director 2045-N16
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Figure 9. TSW switch module
Front panel indicators
Each TSW front panel has four LED indicators, located on the front panel, on the front
panel to indicate TSW status. The functionality and colors are as follows:
• Fault LED - Lights red to indicate when an error condition has occurred.
• Online LED - Lights green to indicate when the module is in an Online state.
• Power OK LED - Lights green to indicate that DC power to the module is within
tolerances and the module is not in a power on reset condition.
• Heartbeat LED - Lights yellow and toggles off and on every second, indicating that the
module is functioning correctly. Error conditions are indicated by distinctive blink
patterns.
Midplane fan distribution module
The SAN256N director midplane fan distribution module (TMF/TFD) provides power and
signal I/O for the upper fan assemblies and connectors for attaching optional external
cooling fans that are mounted on the top of the SANC40N cabinet. The TMF/TFD is
connected to the SAN256N director chassis midplane at the rear of the chassis. Three
8-pin connectors (one per upper fan assembly) support the fan assemblies; two DB9F
connectors support the optional external cabinet fans.
Power OK
Heartbeat
Fault
Online
TSW switch module