DXi4800 Expansion Module EMM/IOM Features and Indicators

Each DXi4800 Gen1 Expansion module contains two enclosure management modules (EMMs). Each DXi4800 Gen2 Expansion module contains input/output modules (IOMs)

The figures below show the connectors located on the rear panel of the EMM and IOM.

DXi4800 Gen1 Expansion Module EMM - Rear View

Item

Indicator, Button, or Connector

Icon

Description

1, 2, 3, 4

SAS port (Input or Output)

 

Provides connection from the Node or another Expansion module.

5

 Debug port Not used.

6

7-Segment Display

  

Display the enclosure location in SAS Chain.

 

DXi4800 Gen2 Expansion Module EMM - Rear View

Item

Indicator, Button, or Connector

Icon

Description
1 Module fault

Amber LED On:

  • Ops panel undergoing test.

  • Rear panel area fault or drive module fault.

Amber LED Flashing:

  • Unknown, invalid, or mixed module type.

  • VPD configuration error.
2 Power on or standby

Green LED:

  • On - IOM power is on.

Amber LED:

  • On - Part of standby sequence as expansion module comes online.

No LED:

  • Off - IOM power is off.
3 Unit identification (UID)

White LED:

  • On - IOM UID active to locate or identify for service activity.

  • Off - IOM UID not active.
4 SAS port A

Green LEDs:

  • On - Connected, link is up.

  • Off - Not connected or link is down.

Amber LEDS:

  • On - Critical SAS cable fault

    • Fast flash (1 second on,1 second off) - UID active.

    • Slow flash (3 seconds on, 3 seconds off) - Non-critical SAS cable fault.

  • Off - SAS expansion port functioning properly.
5 SAS port B Not Used.
6 SAS port C

Green LEDs:

  • On - Connected, link is up.

  • Off - Not connected or link is down.

Amber LEDS:

  • On - Critical SAS cable fault

    • Fast flash (1 second on,1 second off) - UID active.

    • Slow flash (3 seconds on, 3 seconds off) - Non-critical SAS cable fault.

  • Off - SAS expansion port functioning properly.
7 Ethernet port Not Used.