IBM Connecting hosts to the DS4700 Express, Direct out-of-band managed storage subsystems

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

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.

104IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide