Table 22. Description of Figure 32
Number Description
1 Enclosure ID
Fibre-channel loop and ID settings
When you install a hard disk drive in the storage subsystem, the drive tray plugs
into a printed circuit board called the midplane. The midplane sets the fibre-channel
loop ID automatically, based on the enclosure ID switch setting and the physical
location (bay) of the hard disk drive.
Working with SFPs and fiber-optic cables
Each RAID controller has up to four single-ported host channel connections
(depending on the model) and two dual-ported drive channel connections. You use
a small-form factor pluggable transceiver (SFP) to connect each host channel port
and drive channel port to hosts and storage expansion enclosures. The SFP is
inserted into the port, and then a fiber-optic cable is inserted into the SFP. The
other end of the fiber-optic cable connects to an external device. SFPs are laser
products.
Statement 3:
ds470005
1
1
1
1
Figure 32. Storage subsystem seven-segment enclosure ID on models 70 and 72
56 IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide
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