HP BLc7000 HP Direct-Connect External SAS Storage for HP BladeSystem Solutions - Page 112
Port 1: to MSA #2, SAS port B0
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Devices and quantities MSA2012sa controller enclosures: 2 MSA2000 drive enclosures: 6 c7000 enclosures: 1 3Gb SAS BL Switches: 4 Server blade types: double-density Connection details • Switch in interconnect bay 5: ◦ Port 1: to MSA #2, SAS port A0 ◦ Port 2: to MSA #1, SAS port A0 • Switch in interconnect bay 6: ◦ Port 1: to MSA #2, SAS port B0 ◦ Port 2: to MSA #1, SAS port B0 • Switch in interconnect bay 7: ◦ Port 1: to MSA #2, SAS port A1 ◦ Port 2: to MSA #1, SAS port A1 • Switch in interconnect bay 8: ◦ Port 1: to MSA #2, SAS port B1 ◦ Port 2: to MSA #1, SAS port B1 Notes • As shown, when connecting MSA2012 controllers to two pairs of SAS BL Switches, only a single cable per switch can be connected, because each controller has only two ports, and needs to connect to two different switches. This configuration supports high availability, but, during a failover, there will be a slight performance reduction. 112 Deployment examples