Cabling Diagram For Four Redundant Host Connections; Location Of Host Cables On Raid Controllers - IBM DS4800 User, Installation And Maintenance Manual

Figure 58. Location of host cables on RAID controllers
3. Repeat steps 1 on page 79 and 2 on page 79 for each additional redundant
Figure 59. Cabling diagram for four redundant host connections
For examples of redundant, partially-redundant, and non-redundant host and drive
channel configurations, see "Fibre channel host loop configurations" on page 84.
80
IBM System Storage DS4800 Storage Subsystem: Installation, User's, and Maintenance Guide
Controller A
Host A: Host adapter
2 (or from managed
hub or switch)
host connection. You can create a maximum of four redundant host
connections, as shown in Figure 59.
Note: Figure 59 shows that the DS4800 host ports are connected to four sets
of FC host bus adapters (HBAs). You can replace one or all of these sets
of FC HBAs with FC switches as required.
Host 1, Host Adapter 1 and 2
1 2 3 4
Host 2, Host Adapter 1 and 2
Host A: Host adapter
1 (or from managed
hub or switch)
Controller B
Host 4, Host Adapter 1 and 2
4 3 2 1
Host 3, Host Adapter 1 and 2