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Best Practices When Deploying Linux on the HP ProLiant DL980 (updated December 2012)

ManualsBrandsHP ManualsServerHP ProLiant DL980 G7 E7-4870 2.4GHz 10 Core 4p Server
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Figure 7: Disabling x2APIC using RBSU
Verify 40-bit mode before OS installation
The default RBSU method for addressing memory on the DL980 is 40-bit mode. However, this should always be verified
before installing Red Hat Enterprise Linux 5.X or SUSE Linux Enterprise Server 10, because they do not support 44-bit
address mode. During the boot process, confirm that the system is in the default 40-bit mode by looking at the RBSU
splash screen as shown in Figure 8.