5.1 Minimum Configuration

Minimum configuration consists of two nodes supporting three SPARCstorage arrays.

5.1.1 System Board Population

The card cages in the node 0 and node 1 servers are configured identically. Figure 5-2 shows a minimally populated card cage and identifies:

• System board slot numbers
• SBus card slot positions and SBus population by type

5.1.2 SBus Card Population

Install the quantity and types of SBus cards that are appropriate for your system.

5.2 Expansion

See the note below regarding adding SPARCstorage arrays.

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Note - Beyond minimum configuration it is recommended that FC/S cards be installed in the first available empty SBus slot, following all other boards in the system. This will ensure that the controller numbering is preserved if the Solaris Operating Environment is reinstalled. Refer to Section 2 of the SPARCcluster High Availability Software Administration Guide for a discussion of problems that can arise if this recommendation is ignored.

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5.3 Maximum Configuration

The maximum configuration consists of two cabinets containing:

• 2 nodes
• 8 SPARCstorage arrays

See the note under Section 5.2 regarding adding SPARCstorage arrays.

5.3.1 System Board Population

The card cages in the node 0 and node 1 servers are configured identically. Figure 5-3 shows a fully populated card cage and identifies:

• System board slot numbers
• SBus card slot positions and identifies SBus population by type

System boards 2 and 3 are configured alike.

5.3.2 SBus Card Population

Install the quantity and types of SBus cards that are appropriate for your system.

5.4 System Component Cabling

Cabling is illustrated in Chapter 9, "SPARCcluster 1000 High Availability Hardware Installation."

5.4.1 Administration Workstation

This unit connects to:

• the terminal concentrator directly through a serial adapter cable
• public Ethernet

5.4.2 Terminal Concentrator

This unit connects to:

• node 0 and node 1 through a serial adapter cable connected to Serial A port on the system boards in slot 0 in both nodes
• public Ethernet

5.4.3 Public Net Ethernet

Connection to the public or client network is through the terminal concentrator and administration workstation (see bulleted items in Section 5.4.1 and Section 5.4.2).

5.4.4 Private Network Connecting Node 0 to Node 1

The two SPARCcluster 1000 High Availability nodes are connected over two 100 Mbit fast Ethernet (twisted pair) links. Two links are used to eliminate the possibility of a single point of failure. Sun private net cables (short or long) are used.

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Note - Use short or long Sun private net cables of the appropriate length, part numbers: 530-2149 (short) or 530-2150 (long).

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In each node, communication is hosted by a SunFastEthernet 100 Mbit fast Ethernet card for each link. Thus, four such cards are required to support the two links for the High Availability system.

The two cables connect the two nodes directly -- no hubs are used.

5.4.5 SPARCstorage Arrays

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Note - Determine your fiber optic cable requirements. Read the appropriate sections to determine the quantity, length, and type of cables you will require. Apply labels to both ends of all cables before you begin cabling. For cable labeling procedures, refer to Chapter 9, "Labeling Fiber Optic Cables" under Section 9.2.7.4.

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Each SPARCstorage array incorporates two FC/OM optical modules. One module connects to node 0 and one to node 1. These are identified by A and B on the SPARCstorage array chassis back panel. See Figure 5-4. for an example of SPARCstorage array-to-node communication fiber optic cable.

Cabinets are identified by letters A and B. Cabinet A houses the nodes and three SPARCstorage arrays. Cabinet B houses up to five additional SPARCstorage arrays. Figure 5-5 shows a maximum configuration system.

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Note - Figure 5-5 does not show cabling. For maximum configuration cabling detail, refer to Chapter 9.

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