This chapter contains illustrations to supplement the procedures in this book that involve cabling your storage array.
For the procedure about how to install and cable the storage arrays, see the Sun StorEdge 3120 SCSI Array Quick Installation Guide. For a URL to this storage documentation, see Related Documentation.
In the configuration that is outlined in Figure 3–1, you must mirror the Sun StorEdge 3120 storage array against another storage array. This storage array need not be a Sun StorEdge 3120 storage array.
Ensure that the cable does not exceed bus-length limitations. For more information about bus-length limitations, see the documentation that shipped with your hardware.
For the procedure about how to cable the storage arrays, see the Sun StorEdge 3000 Family Installation, Operation, and Service Manual. For a URL to this storage documentation, see Related Documentation.
If the storage array is in dual-bus, multi-initiator mode, see Figure 3–4 for a diagram about how to cable and terminate the storage arrays.
Do not power on the storage array until the storage array is cabled to the first node.
Ensure that the cable does not exceed bus-length limitations. For more information about bus-length limitations, see the documentation that shipped with your hardware.
For the procedure about how to cable the storage arrays, see the Sun StorEdge 3000 Family Installation, Operation, and Service Manual. For a URL to this storage documentation, see Related Documentation.
If the storage array is in dual-bus, multi-initiator mode, remove the terminators and connect the storage array to the second node. See Figure 3–5 for a diagram about how to cable the storage array to both nodes.
For the procedure about how to cable the storage arrays, see the Sun StorEdge 3000 Family Installation, Operation, and Service Manual. For a URL to this storage documentation, see Related Documentation.
Ensure that the cable does not exceed bus-length limitations. For more information about bus-length limitations, see the documentation that shipped with your hardware.
Connect the cables to the storage arrays, as shown in Figure 3–6.
Ensure that the entire bus length that is connected to each storage array is less than 25 m. This measurement includes the cables to both nodes, as well as the bus length that is internal to each storage array, node, and the host adapter.
Ensure that the entire SCSI bus length to each enclosure is less than 25 m. This measurement includes the cables to both nodes, as well as the bus length that is internal to each enclosure, node, and host adapter. Refer to the documentation that shipped with the enclosure for other restrictions about SCSI operation.
Connect the storage array to the host adapters by using differential SCSI cables as shown in see Figure 3–8.
Disconnect the SCSI cables from the storage array. Remove the SCSI cables in the order that is shown in Figure 3–9.
Disconnect the SCSI cables from the storage array. Remove the SCSI cables in the order that is shown in Figure 3–10.
Connect the cables to the storage array, as shown in Figure 3–11.
Ensure that the entire SCSI bus length to each storage array conforms to the distances in Table 1–1. This measurement includes the cables to both nodes, as well as the bus length that is internal to each storage array, node, and host adapter. Refer to the documentation that shipped with the storage array for other restrictions about SCSI operation.
Connect the single-ended SCSI cable between the node and the storage arrays, as shown in Figure 3–12.
Ensure that the entire SCSI bus length to each storage array conforms to the distances in Table 1–1. This measurement includes the cables to both nodes, as well as the bus length that is internal to each storage array, node, and host adapter. Refer to the documentation that shipped with the storage array for other restrictions about SCSI operation.
Connect the storage arrays to the host adapters by using single-ended SCSI cables, as shown in Figure 3–13.
Disconnect the SCSI cables from the storage array. Disconnect the SCSI cable on the SCSI OUT connector, and then disconnect the cable on the SCSI IN connector, as shown in Figure 3–14.
Disconnect the SCSI cables from the storage array. Disconnect the SCSI cables in the order that is shown in Figure 3–15.
If your host has only one SCSI port, see SPARC: Single-SCSI-Port Hosts. If your host has two SCSI ports, see SPARC: Dual-SCSI-Port Hosts.
When you install the storage array on single-SCSI-port hosts use the Netra E1 PCI Expander for the second host SCSI port. Figure 3–16 shows an overview of the installation. The storage arrays are cabled so that no single point of failure is 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.
To cable the storage arrays correctly, adhere to the bus-length restrictions that are listed in the documentation that shipped with your host adapter. In a Sun Cluster environment, this cable-length measurement includes the cables to both nodes. This cable-length measurement also includes the bus length that is internal to each storage array, node, and host adapter.
To cable the storage arrays correctly, adhere to the bus-length restrictions that are listed in the documentation that shipped with your host adapter. In a Sun Cluster environment, this cable-length measurement includes the cables to both nodes. This cable-length measurement also includes the bus length that is internal to each storage array, node, and host adapter.
To cable the storage arrays correctly, adhere to the bus-length restrictions that are listed in the documentation that shipped with your host adapter. In a Sun Cluster environment, this cable-length measurement includes the cables to both nodes. This cable-length measurement also includes the bus length that is internal to each storage array, node, and host adapter.
Disconnect the SCSI cables from the storage arrays. Disconnect the cable on the SCSI OUT connector, and then disconnect the cable on the SCSI IN connector, as shown in Figure 3–22.
Disconnect the SCSI cables from the storage arrays. Disconnect the SCSI cable in the order that is shown in Figure 3–23.
You can install a single storage array by using a split-bus configuration. You can install two storage arrays by using a single-bus configuration.
To use a single storage array in a Sun Cluster environment, you must use the split-bus configuration.
As Figure 3–24 shows, the split-bus configuration requires that the storage array contain two Environmental Service Modules (ESM). Each ESM is connected to two nodes. Each ESM controls half the disks in the storage array and the data is mirrored by using a volume manager.
As Figure 3–25 shows, the single-bus configuration requires two storage arrays that each contain a single Environmental Service Module (ESM). The ESM controls all disks on the storage array in which it is installed and the volume manager implements mirroring between the two storage arrays. Each ESM must be connected to two nodes.
Ensure that the entire bus length that is connected to the storage array is less than 12 m. The bus length includes the cables from the ESM to the host adapter. See the documentation that shipped with your hardware for internal bus length.
For split-bus configurations, see Figure 3–26 and Figure 3–28.
For single-bus configurations, see Figure 3–27 and Figure 3–29.