IBM J15, Manual

Page: 77 / 142

Table 10. LEDs on drives and secondary expansion modules (continued)
Function
Color Status Description
Fault Amber On
• A fault occurred on the
drive. The LED is turned
off when the drive is
removed and replaced.
• Not used for secondary
expansion modules.
Flash
• The drive is being
identified; a fault might
or might not be
detected.
• The secondary
expansion module is
being identified.
Off The installed drive or
secondary expansion
module is operating
normally; no faults are
detected.
LEDs on the rear of the disk enclosure
Figure 50 on page 49 shows the rear view of a IBM Cloud Object Storage System
™
5U92 disk enclosure.
LEDs on the rear of the enclosure provide information about each fan module, each expansion canister,
and SAS links.
Figure 50. LEDs on the back of the disk enclosure
The disk enclosure has four fans. Each fan has one LED; for example, Figure 50 on page 49 shows the
location of the LED ( 5 ) for fan number four. When a fan is operating normally, the LED is not lit. If a fault is
detected, the amber LED is lit.
As Figure 50 on page 49 also shows, the disk enclosure contains two expansion canisters. Each expansion
canister contains its own set of LEDs, as shown in Figure 51 on page 49. The LEDs provide status
information about the expansion canister itself and the SAS connections.
Figure 51. LEDs on the back of the expansion canister
Chapter 2. Installing the system hardware 49