Black Box KV5300 Series manual Servswitch and Servswitch Ultra

SERVSWITCH™ AND SERVSWITCH ULTRA™

5.2.4CONFIGURE SYSTEM: EXPANSION UNITS (IBM AND MULTIPLATFORM MODELS ONLY)

This setting corresponds to the number of “submaster” (expansion) Serv units that are connected to the main master IBM only or multiplatform ServSwitch Ultra. (This option will appear and can be set for Sun only and Mac only models, but has no purpose, because those models cannot currently be cascaded.) It helps to determine which CPU number is associated with which physical connector. If you aren’t cascading, this number should be set to zero. If one submaster is connected, the value should be set to one, and so on.

To change this setting, press [Enter] while “Expansion units” is highlighted. An “Input new value” box appears. Use the shared keyboard’s number keys to input a new value from 0 to 16 and hit [Enter]. The input box disappears and the new setting appears in the “Expansion units” field.

5.2.5CONFIGURE SYSTEM: EXPANSION WIDTH (IBM AND MULTIPLATFORM MODELS ONLY)

This setting correpsonds to the number of CPU ports that each submaster attached to an IBM only or multiplatform ServSwitch Ultra master has. (This option will appear and can be set for Sun only and Mac only models, but has no purpose, because those models cannot currently be cascaded.) It helps to determine which CPU number is associated with which physical connector. For example, if you are using four-port submasters, then the expansion width should be set to four. (Do not use submasters that have different numbers of CPU ports—both 4-port and

8-port submasters, for example—because this will cause switching and scanning problems.)

To change this setting, press [Enter] while “Expansion width” is highlighted. An “Input new value” box appears. Use the shared keyboard’s number keys to input a new value from 1 to 16 and hit [Enter]. The input box disappears and the new setting appears in the “Expansion width” field.

An example: Suppose your system consists of 32 computers that you’d like to cluster in four groups of eight. You connect each group to an 8-port submaster, and each of the four submasters to an 8-port master. You would then set maximum computers to 32, expansion units to four, and expansion width to eight. If at some point you connected four more computers to the four extra CPU ports on the master, units and width would not change, but you would set maximum computers to 36.

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