6.1 Minimum Configuration

Minimum configuration is two nodes supporting three SPARCstorage Arrays.

6.1.1 System Board Population in the Card Cage

Node 0 and node 1 card cages are configured identically. Figure 6-2 shows a minimally populated card cage and identifies:

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

6.1.2 SBus Card Population

Install the quantity and types of SBus cards that are appropriate for your system. Figure 6-2 shows the SBus card configuration for a minimum-configuration system.

6.2 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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6.3 Maximum Configuration

The maximum configuration consists of six cabinets containing:

• 2 nodes -- each housed in its own cabinet
• 20 SPARCstorage Arrays -- housed in six cabinets (node and array cabinets)

6.3.1 System Board Population

Node 0 and node 1 card cages are configured identically. Figure 6-3 shows a fully populated card cage and identifies:

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

6.3.2 SBus Card Population

Install the quantity and types of SBus cards that are appropriate for your system. Figure 6-3 shows the SBus card configuration for a fully populated, maximum-configuration system.

6.4 System Component Cabling

Interface cabling is illustrated in Chapter 10, "SPARCcluster 2000 High Availability Server Hardware Installation."

6.4.1 Administration Workstation

This unit connects to:

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

6.4.2 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

6.4.3 Public Net Ethernet

Connection to the public or client network is through the terminal concentrator and administration workstation (see bulleted items in Section 6.4.1 and Section 6.4.2).

6.4.4 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.

6.4.5 Boot Disks

Boot disks are hosted by a SCSI II host adapter installed in system board 0.

6.4.6 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 6-4. for an example of SPARCstorage array-to-node communication fiber optic cable.