IBM 3454-A3C Customer Install Manual page 19

 Chassis #1 - Install this 2U server (marked #1) one rack unit (1U) above the
bottom of the rack.
 Chassis #2 - Install this 2U server (marked #2) directly above Chassis #1.
 25G Switch - The 25G switch (marked # 3) should be installed above the top-
most server. You may install the 25G switch in any convenient location. (see
Figure 2 for recommended switch location, U24)
 1G Switch - The 1G switch (marked # 4) should be installed above the 25G
switch. You may install the 1G switch in any convenient location. (see Figure 2
for recommended switch location, U27)
 PDUs – Install horizontally at U33/U34 for easy cable routing and service access.
Additional PDUs should be installed above the PDUs at locations U35/U36.
 Spine switches should be installed in rack 3 at U30 and U31 per figure 4.
 The hub switch is a 1G Cloud Pak for Data System management switch at U32
that is used in conjunction with the spine switches per figure 4.
Installation Notes:
 The base system 2U chassis can be identified by looking at the chin label on the
left side of the chassis. One of the chassis is marked #1, while the other chassis
is marked #2. Expansion chassis are marked "EXPANSION".
 The base system 25G switch is marked #3 and the base system 1G switch is
marked #4. Expansion switches are marked "EXPANSION".
 If you intend to expand your system, you may want to leave enough space
to install additional expansion chassis and switches at a later date. Expansion
chassis and switches are ordered separately. Expansion chassis and switches
can be racked in any order, but the preferred locations are shown in Figure 3.
© Copyright IBM Corporation 2019, 2020. Customer Install Guide, 1G Switch 19