IBM System Storage Subsystem DS5020 - Manual (Page 107)

1. Connect port 1A on the left ESM in EXP520 one to port 1B on the left ESM in
EXP520 three.
2. Connect port 1A on the right ESM in EXP520 three to port 1B on the right
ESM in EXP520 one.
3. Connect port 1B on the left ESM in EXP520 one to port 2 of drive channel 1
on the DS5020.
4. Connect port 1A on the left ESM in EXP520 three to port 1B on the left ESM in
EXP520 five.
5. Connect port 1A on the right ESM in EXP520 five to port 1B on the right ESM
in EXP520 three.
6. Connect port 1 of drive channel 2 on the DS5020 to port 1B on the right ESM
in the EXP520 five.
7. Connect port 1A on the left ESM in EXP520 two to port 1B on the left ESM in
EXP520 four.
8. Connect port 1A on the right ESM in EXP520 four to port 1B on the right ESM
in EXP520 two.
9. Connect port 1B on the left ESM in EXP520 two to port 1 of drive channel 1
on the DS5020.
10. Connect port 1A on the left ESM in EXP520 four to port 1B on the left ESM in
EXP520 six.
11. Connect port 1A on the right ESM in EXP520 six to port 1B on the right ESM
in the EXP520 four.
12. Connect port 2 of drive channel 2 on the DS5020 to port 1B on the right ESM
in EXP520 six.
Chapter 3. Cabling the storage subsystem 77