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3. Initiator only ports (ports A) 4. Initiator/target ports (ports B)
5. Storage controller 2
Back-End Connections for an SCv2000/SCv2020 without
Expansion Enclosures
When you deploy an SCv2000/SCv2020 without expansion enclosures, you must interconnect the
storage controllers using SAS cables.
About this task
NOTE: The top storage controller is storage controller 1 and the bottom storage controller is
storage controller 2.
Steps
1. Connect a SAS cable between storage controller 1: port A and storage controller 2: port B.
2. Connect a SAS cable between storage controller 1: port B and storage controller 2: port A.
Example
Figure 58. Interconnected Storage Controllers
1. SCv2000/SCv2020 storage system 2. Storage controller 1
3. Storage controller 2
Back-End Connections for an SCv2000/SCv2020 with
Expansion Enclosures
This section shows common cabling between the SCv2000/SCv2020 and SC100/SC120 expansion
enclosures. Locate the scenario that most closely matches the Storage Center that you are configuring
and follow the instructions, modifying them as necessary.
The SCv2000/SCv2020 supports up to eight SC100 expansion enclosures, up to four SC120 expansion
enclosures, or any combination of SC100/SC120 expansion enclosures as long as the total disk count
does not exceed 168 disks.
SC100/SC120 expansion enclosures chains are cabled as follows.
• Side A (Orange): Expansion enclosures are connected from port B to port A, using the top EMMs.
• Side B (Orange): Expansion enclosures are connected from port A to port B, using the bottom EMMs.
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Back-End Cabling and Connecting Power