Owners Manual

Expansion module

The 5U84 expansion enclosure uses the same IOMs that are used by 2U12 and 2U24 enclosures.

Power supply module

This figure shows the power supply unit that is used in 5U controller enclosures and optional 5U84 expansion enclosures.

Figure 25. Power supply unit (PSU)

1. Module release latch 2. Handle

3. PSU Fault LED (Amber/blinking amber) 4. AC Fail LED (Amber/blinking amber)

5. Power OK LED (Green) 6. Power connect

7. Power switch

LED behavior:

● If any of the PSU LEDs are illuminated amber, a module fault condition or failure has occurred.

● For a detailed description of PSU LEDs, see FCM LED states on page 37.

The 5U84 enclosures use separate CRU modules for power supply and cooling/circulation, respectively. Power supply unit

(PSU) on page 19 shows the power supply module, which provides the enclosure with power connection and a power switch.

Fan cooling module (FCM) on page 19 shows the fan cooling module that is used in 5U84 enclosures. The FCM is smaller than

the PCM, and five of them are used within the 5U enclosure to provide sufficient airflow throughout the enclosure.

Fan cooling module

The following figure shows the fan cooling module (FCM) used in 5U controller enclosures and optional 5U expansion

enclosures.

Figure 26. Fan cooling module (FCM)

Module release latch 2. Handle

3. Module OK LED (Green) 4. Fan Fault LED (Amber/blinking amber)

LED behavior:

● If any of the FCM LEDs are illuminated amber, a module fault condition or failure has occurred..

● For a detailed description of FCM LEDs, see 5U84 enclosure FCM LEDs on page 37.

Storage system hardware