Filter
Top Products
Connecting a redundant drive loop to the DS4500
Use the following procedure to connect a redundant drive loop to the DS4500 Storage Subsystem. You
will need two fiber-optic cables for each redundant pair of loops (for example, loop A and loop B) that
you are connecting to the DS4500 Storage Subsystem.
1. Connect drive loop A to the DS4500 Storage Subsystem, as shown in Figure 14 on page 14.
Starting with the last storage expansion enclosure in loop A, connect the In port on the left ESM
board to the Out (upper) port on drive mini hub 4 on the DS4500 Storage Subsystem.
Leave the Out port on the left ESM board on the first storage expansion enclosure and the In (lower)
connector on drive mini hub 4 unoccupied.
Loop B
Loop D
Loop A
Loop C
Storage expansion
enclosure group 1
Storage expansion
enclosure group 2
Storage server
Figure 13. Connecting a second redundant storage expansion enclosure group (loops C and D)
13