If the RXE-100 has the second set of six PCI slots installed, use the short interconnect management cable (supplied with the PCI slot option kit) to connect Management A (out) Port to Management B (in) Port (see Figure 3-9 on page 81).

Important: In the publication IBM RXE-100 Remote Expansion Enclosure Installation Guide, the section entitled “Attaching the enclosure to an xSeries 440 server” does not include instructions to connect the ports Management A (out) and Management B (in) on the RXE-100. Our testing in the lab indicates that this additional cable is necessary.

The 8 m interconnect management cable is suitable for inter-rack configurations.

For 16-way configurations, the management ports must be connected as shown in Figure 3-10 on page 82. An additional cable will need to be ordered.

Important: Power to the RXE-100 is controlled by the x440, via the interconnect management cable and under the control of the Remote Supervisor Adapter.

3.2.4 Serial connections

The x440 does not have an external serial port. If a serial port is required (for example, for UPS remote management), then a USB-to-serial adapter is required, such as the Belkin USB to Serial Adapter (part number 10K3661).

Restriction: IBM USB Serial/Parallel Adapter (part number 22P5298) is not supported in the x440.

It is also possible to configure the serial port on the Remote Supervisor Adapter to be sharable between the alerting functions of the adapter and the operating system. However, we recommend that you use a separate serial port.

3.3 Storage considerations

When you are planning the storage configuration to accompany the x440, there are important performance and sizing issues that need to be considered.

The two internal hot-swap 1” drive bays will typically be used for operating system installation. We recommended these drives be configured as a two-drive RAID-1 array to provide a higher degree of system availability. Drives up to

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IBM 440 manual Storage considerations, Serial connections