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Disconnect the A-Side Chain from the SC100/SC120 Expansion Enclosure
Disconnect the A-side chain from the expansion enclosure that you want to remove.
About this task
CAUTION: To disconnect the A-side chain without a system outage, disconnect the A-side cable
from
storage controller 1 first. Disconnecting a different cable in the chain may disrupt IO to the
expansion enclosure, resulting in a system outage.
Steps
1. Disconnect the A-side cable (shown in orange) between storage controller 1: port A and expansion
enclosure 1: top EMM, port A.
2. In the Dell Storage Client, verify that the B-side ports on both storage controllers are Up. The B-side
chain continues to carry IO while the A-side chain is disconnected.
3. Remove the A-side cable between expansion enclosure 1: top EMM, port B and expansion enclosure
2: top EMM, port A.
Figure 81. Disconnecting the SC100/SC120 Expansion Enclosure from the A-side Chain
1. Storage system
2. Storage controller 1
3. Storage controller 2 4. Expansion enclosure 1
5. Expansion enclosure 2
4. Reconnect the A-side cable to storage controller 1: port A.
5. Connect the other end of the A-side cable to expansion enclosure 2: top EMM, port A.
102
Adding or Removing an Expansion Enclosure