IBM 4957-J10, Manual

Page: 48 / 70

Figure 20. 3.5" Drive carrier LEDs
Table 11. LEDs: Drive carrier LEDs
Drive LED (green)
Drive LED (amber) Associated Ops Panel
LED
Status
Off Off None No drive installed
On/ Flashing Off None Drive installed and
operational
On Flashing: 1s on/1s off None SES device identity set
On On Logical fault (amber) SES device fault bit set
Off On Module fault (amber) Power control circuit
failure
On Flashing: 3s on/1s off Logical fault (amber) SES device rebuild bit
set
I/O Module LEDs
I/O module LED states are shown in the following table.
Table 12. I/O module LED states
I/O Module OK (green)
I/O Module Fault
(amber)
SAS Activity LED
(green)
Status
On Off I/O module OK
Off On I/O module fault. For
replacement procedure
see “Replacing an I/O
module” on page 40
Off No external host port
connection
On External host port
connection - no activity
Flashing External host port
connection - activity
Flashing I/O module VPD error
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.
28 IBM Cloud Object Storage System: IBM Small J10 Disk Enclosure Manual