Chapter 3. IBM System Storage DS4000 and DS5000 hardware 45
3.4.5 DS5000 storage subsystem rear view
The rear of the DS5000 shows the two controllers stacked in a horizontal fashion. Controller A
is located on the top and controller B is located on the bottom. The DS5100 and DS5300
system can have two Host Interface Cards in total. Both controllers are hot-swappable
(Figure 3-18 and Figure 3-19 on page 46).
The rear view of the subsystem varies depending on the version of HIC cards you have
installed. Host connection is described in more detail in 3.4.7, “DS5000 storage subsystem
host-side connections” on page 55.
You can have a:
Fibre Channel version, which has one or two FC HICs installed per controller
(Figure 3-18).
iSCSI Version, which has one or two iSCSI HICs installed per controller (Figure 3-19 on
page 46).
Mixed version, which has one FC and one iSCSI HIC installed.
Notice that controller A is positioned upside-down relative to controller B. It is important to
keep this in mind when connecting the back-end ports to hosts and drive-side expansion
enclosures, as we will discuss later.
Figure 3-18 Rear view of the DS5300 storage subsystem: FC version
8 Drive-side connections
Controller A
8 Host connections (4Gbps, or 8Gbps FC)
Controller B
2 Ethernet connections
(per controller)
(per controller)
(per controller)
Serial
Serial
2 host boards
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