One Ds5020 And Two Exp520 Storage Expansion Enclosures; One Ds5020 And Two Exp520 Storage Expansion Enclosures Behind A Pair Of Ds5020 Drive Ports - IBM System Storage DS5020 Installation, User's, And Maintenance Manual

One DS5020 and two EXP520 storage expansion enclosures

Figure 47 shows the cabling scheme for one DS5020 storage subsystem and two
EXP520 storage expansion enclosures behind both ports of a dual-ported drive
channel.
Port 2, drive channel 1
DS5020
EXP520 one
EXP520 two
Figure 47. One DS5020 and two EXP520 storage expansion enclosures behind a pair of
DS5020 drive ports
Perform the following steps to create the cabling scheme shown in Figure 47:
1. Connect port 2 of drive channel 1 on the DS5020 to port 1B on the left ESM in
EXP520 one.
2. Connect port 1B on the right ESM in EXP520 one to port 1 of drive channel 2
on the DS5020.
3. Connect port 1 of drive channel 1 on the DS5020 to port 1B on the left ESM in
EXP520 two.
4. Connect port 1B on the right ESM in EXP520 two to port 2 of drive channel 2
on the DS5020.
Port 1, drive channel 1
1B 1A
1A 1B
1A
1B
1A 1B
Chapter 3. Cabling the storage subsystem
Port 1, drive channel 2
Port 2, drive channel 2
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