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Using EXP500, EXP100, EXP700, or EXP710 storage expansion
enclosures
The section provides instructions on how to connect one group of four EXP500,
EXP100, EXP700, or EXP710 storage expansion enclosures in a redundant drive
loop. Instructions for how to connect a second group of four EXP500, EXP100,
EXP700, or EXP710 storage expansion enclosures in a redundant drive loop are
also included in this procedure. In addition, this procedure is also applicable when
you have any number of enclosures, up to the maximum number that can be
attached in the redundant drive loop pair.
To complete this procedure, you will need two fiber-optic cables per storage
expansion enclosure.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. Do not overtighten the cable
straps or bend the cables to a diameter of less than 76 mm (3 in.) or a radius less
than 38 mm (1.5 in.).
Connecting
EXP500, EXP100, EXP700, or EXP710 in a redundant pair of drive
loop: This procedure describes how to cabling of intermixing 10-drive and 14-drive
storage expansion enclosures together in a redundant pair of drive loops.
Note: Not all of these EXP500, EXP100, EXP700, or EXP710 enclosures can be
cabled together. For information on supported combinations, see “Supported
storage expansion enclosure configurations and intermix combinations” on
page 62.
1. Connect the first two storage expansion enclosures to drive loop A, as shown in
Figure 59 on page 82.
Starting with the first storage expansion enclosure, connect a fiber-optic cable
from the In port on the left environmental services module (ESM) board to the
Out port on the left ESM board in the second (next) storage expansion
enclosure.
Chapter 3. Cabling the storage subsystem 81