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Subsystem.
Table 29. Description of Figure 78
Number Description
1 DS4700 Express Storage Subsystem
2 EXP100
3 EXP810
4 EXP710
Storage expansion enclosure settings
This section provides information about storage expansion enclosure settings. For
additional detail, refer to the Installation, User's, and Maintenance Guide for your
storage expansion enclosure.
Fibre channel loop and ID settings
When you install an E-DDM in the storage expansion enclosure, the E-DDM 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 E-DDM.
DS4000 storage expansion enclosure ID settings
Some DS4000 storage expansion enclosures, such as the EXP710 and EXP100,
have an enclosure ID switch that is used to identify the DS4000 storage expansion
enclosure on a fibre channel loop. The enclosure ID switch is located on the back
of the unit. Other DS4000 storage expansion enclosures, such as the EXP810, do
not have an enclosure ID switch because the controller automatically sets the
enclosure ID number.
2
2
2 2
3
3
4
4
4
ds470102
1
2
DS4700 Express
EXP100
EXP100
EXP100
EXP100
EXP100
EXP100
EXP100
EXP810
EXP810
EXP810
EXP810
EXP710
EXP710
EXP710
EXP710
EXP710
Figure 78. Cabling variations when intermixing EXP100, EXP710, and EXP810 storage expansion enclosures behind a
DS4700 Express Storage Subsystem
Chapter 3. Cabling the storage subsystem 97