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Connecting hosts to the DS4700 Express
The DS4700 Express supports redundant direct attached connections to up to four
hosts (models 72A and 72H). To ensure full protection against the loss of any one
fibre channel path from the host servers to the DS4700 Express Storage
Subsystem, always use redundant host connections by connecting each host to the
appropriate single-ported host channels on both RAID controllers A and B. Using
the fibre channel switches, up to 512 hosts can be redundantly attached to the
DS4700 Express Storage Subsystem in a fibre channel SAN fabric.
To connect a host adapter to the DS4700 Express RAID controllers, perform the
following steps:
1. Install SFP modules in host ports on RAID controllers A and B.
Table 35. Description of Figure 62
Number Description
1 Two storage subsystems
2 Fibre channel I/O path
3 Host server
4 Ethernet network
5 Management station
Figure 82. Direct (out-of-band) managed storage subsystems
104 IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide