Single SCSI Port Hosts

When installing the Netra D130/StorEdge S1 storage enclosures on single SCSI port hosts use the Netra E1 PCI Expander for the second host SCSI port. Figure D-1 shows an overview of the installation. The storage devices are cabled so that there is no single point of failure in the cluster. Netra E1 PCI Expanders provide the second SCSI port for the 1RU form factor hosts such as the Netra t1, x1 or t1 200.

Figure D-1 Overview Example of a Enclosure Mirrored Pair Using E1 Expanders

1. Connect the cables to the Netra D130/StorEdge S1 enclosures, as shown in Figure D-2.

   Make sure that the entire SCSI bus length to each Netra D130 enclosures is less than 6 m. The maximum SCSI bus length for the StorEdge S1 enclosure is 12 m. This measurement includes the cables to both nodes, as well as the bus length internal to each enclosure, node, and host adapter. Refer to the documentation that shipped with the enclosures for other restrictions regarding SCSI operation.

   Figure D-2 Example of SCSI Cabling for an Enclosure Mirrored Pair

   
   

2. Connect the Ethernet cables between the host enclosures, Netra E1 PCI expanders, and Ethernet switches, as shown in Figure D-3.

   Figure D-3 Example of Ethernet cabling for an Mirrored Pair Using E1 Expanders