Temperature Sensors; Troubleshooting (2U Enclosures) - Lenovo Storage D1212 Hardware Installation And Maintenance Manual

Figure 64. 12Gb/s SAS JBOD Module Connectors and Indicators (5U enclosures) (viewed from rear of enclosure)
For the detailed information of ESM LEDs status, refer to the following table.
Table 18. ESM LED Status
ESM OK (Green)
On
Off
Flashing

Temperature Sensors

Temperature sensors throughout the enclosure and its components monitor the thermal health of the storage
system. Exceeding the limits of critical values will cause a notification to occur.

Troubleshooting (2U Enclosures)

The following sections describe common problems which can occur with your enclosure system and some
possible solutions. For all of the problems listed in Table 19 "Alarm Conditions " on page 62, the module fault
LED on the Ops panel (Figure 24 "580W PCM LEDs " on page 22) will light amber to indicate a fault.
Table 19. Alarm Conditions
Status
PCM alert - loss of DC power from a
single PCM
PCM alert - loss of DC power from a
single PCM
PCM fan fall
ESM detected PCM fault
PCM removed
62
Lenovo Storage D1212/D1224/D3284Hardware Installation and Maintenance Guide
ESM Fault (Amber)
Off
On
Severity
Fault - no loss of redundancy
Fault - loss of redundancy
Fault - loss of redundancy
Fault
Configuration error
External Host Port
Activity (Green)
Off
On
Flashing
Status
ESM OK
ESM fault. For replacement
procedure see "Replacing
ESMs" on page 92.
No external host port
connection
External host port
connection - no activity
External host port
connection - activity
ESM VPD error
OPs Panel LED
Module Fault
Module Fault
Module Fault
Module Fault
Module Fault