In which of the following is a single connection acceptable for a storage network?

Connecting to an Ethernet virtual fabric (like an FCoE or iSCSI fabric) typically requires multiple connections for redundancy and performance, as a single connection would be a single point of failure.

Connecting to Fibre Channel Switched Fabric (FC-SW) environments mandates redundant connections from servers to different switches to ensure high availability and prevent single points of failure.

While a dedicated VLAN isolates traffic, connecting to it for storage purposes still requires redundancy (multiple physical paths) to avoid a single point of failure in the underlying network infrastructure.

Fiber Channel Arbitrated Loop (FC-AL) is an older, shared-media technology where devices are connected in a loop. It inherently does not support the multi-pathing or fabric redundancy found in modern switched Fibre Channel (FC-SW) or Ethernet fabrics, making a single physical connection typical as it wouldn't significantly improve fault tolerance.