Description Of Figure 54; Connection From Drive Port 2 Controller B; Connection From Drive Port 2 Controller A Connection From Drive Port 3 Controller B; Connection From Drive Port 1 Controller A Connection From Drive Port 4 Controller B - IBM DS4800 Installation, User And Maintenance Manual

Table 23. Description of Figure 54 (continued)
Number Description
2B

Connection from drive port 2 controller B

2A
Connection from drive port 2 controller A
3B
Connection from drive port 3 controller B
1A
Connection from drive port 1 controller A
4B
Connection from drive port 4 controller B
1

Drive channel 1

2
Drive channel 2
3
Drive channel 3
4
Drive channel 4
5
EXP710 enclosure 1
6
EXP710 enclosure 2
7
EXP710 enclosure 3
8
EXP710 enclosure 4
9
EXP710 enclosure 5
10
EXP710 enclosure 6
11
EXP710 enclosure 7
12
EXP710 enclosure 8
13
EXP710 enclosure 9
14
EXP710 enclosure 10
15
EXP710 enclosure 11
16
EXP710 enclosure 12
17
EXP710 enclosure 13
18
EXP710 enclosure 14
19
EXP710 enclosure 15
20
EXP710 enclosure 16
1. Make all connections from the left ESMs to the right ESMs in the expansion
enclosures, as indicated by 21 , 23 , 22 , and 24 .
2. To create drive channel 1, after connecting enclosures 1, 2, 3, and 4 together
( 21 ), connect drive port 4 of controller A ( 4A ) to EXP710 enclosures 1 ( 5 ),
2 ( 6 ), 3 ( 7 ), and 4 ( 8 ); then, connect drive port 1 of controller B ( 1B ) to
enclosures 4 ( 8 ), 3 ( 7 ), 2 ( 6 ), and 1 ( 5 ).
3. To create drive channel 3, after connecting enclosures 5, 6, 7, and 8 together
( 23 ), connect drive port 3 of controller A ( 3A ) to enclosures 5 ( 9 ), 6 ( 10 ),
7 ( 11 ), and 8 ( 12 ); then, connect port 2 of controller B ( 2B ) to enclosures
8 ( 12 ), 7 ( 11 ), 6 ( 10 ), and 5 ( 9 ).
4. To create drive channel 2, after connecting enclosures 9, 10, 11, and 12
together ( 22 ), connect drive port 2 of controller A ( 2A ) to enclosures 9
( 13 ), 10 ( 14 ), 11 ( 15 ), and 12 ( 16 ); then, connect drive port 3 of
controller B ( 3B ) to enclosures 12 ( 16 ), 11 ( 15 ), 10 ( 14 ), and 9 ( 13 ).
5. To create drive channel 4, after connecting enclosures 13 ( 17 ), 14 ( 18 ), 15
( 19 ), and 16 ( 20 ) together ( 24 ), connect drive port 1 of controller A ( 1A )
Chapter 3. Cabling the storage subsystem
79