Chapter 3 Connect the Back End56 Storage Center SC8000 Controller Deployment GuideSC8000 SAS Port TypesThere are two types of controller SAS ports: initiator only and initiator/target. SAS chainsbegin with an initiator port. As shown in the following figure, ports 1–2 (circled in blue) onSAS IO cards are initiator only, and ports 3–4 (circled in red) are initiator/target.Figure 52. Controller SAS Port TypesConnect IPC for Dual-Controller Storage CentersIf you are configuring a dual‐controller Storage Center, connect the controllers with aCategory (Cat) 6 Ethernet cable. If the Storage Center only uses a single SAS chain, youmust also interconnect the controllers with additional SAS connections to make sure thatsufficient IPC bandwidth is available.1 Initiator Only (Ports 1–2)2 Initiator/Target (Ports 3–4)12
