To Next Page

To Previous Page

Chapter 3. IBM System Storage DS4000 and DS5000 hardware 75

Several LED indicators and the FC Link speed selector are also visible from the front of the

storage unit. Refer to “Front panel LEDs and FC link speed selector” on page 79 for details

about the LEDs.

3.5.4 DS5020 storage subsystem rear view

The rear of the DS5020 appears in different versions depending on what host port

configuration has been ordered for the system (Figure 3-51, Figure 3-52 on page 76, and

Figure 3-53 on page 76).

Figure 3-51 DS5020 rear view: Base model

They vary only in host port configurations. The base model does not have the optional Host

Interface Cards (HIC). It comes with four 8 Gbps Fibre Channel host ports.

Attention: Never hot-swap an E-DDM CRU when its associated green activity LED is

flashing. Hot-swap a drive CRU only when its associated amber fault LED light is not

flashing or when the drive is inactive and its associated green activity LED light is not

flashing. Wait 70 seconds before inserting the drive back into the bay.

Controller A

Serial

port

Ethernet

ports

Dual-ported

drive channel

Fibre Channel

host channels

Enclosure ID

Controller B