IBM DS5100

Table 20. Number of storage expansion enclosures per port and drive channel (continued)
Number of
enclosures Channel 1 Channel 2 Channel 3 Channel 4
110000000
210100000
310101000
410101010
511101010
611111010
711111110
811111111
921111111
10 2 1 2 1 1 1 1 1
11 2 1 2 1 2 1 1 1
12 2 1 2 1 2 1 2 1
13 2 2 2 1 2 1 2 1
14 2 2 2 2 2 1 2 1
15 2 2 2 2 2 2 2 1
16 2 2 2 2 2 2 2 2
17 3 2 2 2 2 2 2 2
18 3 2 3 2 2 2 2 2
19 3 2 3 2 3 2 2 2
20 3 2 3 2 3 2 3 2
21 3 3 3 2 3 2 3 2
22 3 3 3 3 3 2 3 2
23 3 3 3 3 3 3 3 2
24 3 3 3 3 3 3 3 3
25 4 3 3 3 3 3 3 3
26 4 3 4 3 3 3 3 3
27 4 3 4 3 4 3 3 3
28 4 3 4 3 4 3 4 3
Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Port
7
Port 8 Controller
B
Channel 5 Channel 6 Channel 7 Channel 8
EXP5000 storage expansion enclosure cabling rules
Refer to these general rules when cabling the storage subsystem to the EXP5000
storage expansion enclosure.
1. Do not connect a combination of more than seven EXP5000 storage expansion
enclosures to the two ports of a dual-ported drive channel. Failure to observe
this limitation might result in loss of data availability.
2. Do not connect more than four EXP5000 storage expansion enclosures to any
port of a dual-ported drive channel.
Chapter 3. Cabling the storage subsystem 75