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2.3. Deployment

cpuspeed component, BZ#626893
Some HP Proliant servers may report incorrect CPU frequency values in /proc/cpuinfo or /sys/device/system/cpu/*/cpufreq. This is due to the firmware manipulating the CPU frequency without providing any notification to the operating system. To avoid this ensure that the HP Power Regulator option in the BIOS is set to OS Control. An alternative available on more recent systems is to set Collaborative Power Control to Enabled.
releng component, BZ#644778
Some packages in the Optional repositories on RHN have multilib file conflicts. Consequently, these packages cannot have both the primary architecture (for example, x86_64) and secondary architecture (for example, i686) copies of the package installed on the same machine simultaneously. To work around this issue, install only one copy of the conflicting package.
releng component
The openmpi-psm and openmpi-psm-devel packages are not provided on architectures other than AMD64 and Intel 64 for Red Hat Enterprise Linux 6.2. If the openmpi-psm.i686 or/and openmpi-psm-devel.i686 packages are installed on a AMD64 or an Intel 64 system, remove these packages before you attempt to update Open MPI.
grub component, BZ#695951
On certain UEFI-based systems, you may need to type BOOTX64 rather than bootx64 to boot the installer due to case sensitivity issues.
grub component, BZ#698708
When rebuilding the grub package on the x86_64 architecture, the glibc-static.i686 package must be used. Using the glibc-static.x86_64 package will not meet the build requirements.
parted component
The parted utility in Red Hat Enterprise Linux 6 cannot handle Extended Address Volumes (EAV) Direct Access Storage Devices (DASD) that have more than 65535 cylinders. Consequently, EAV DASD drives cannot be partitioned using parted, and installation on EAV DASD drives will fail. To work around this issue, complete the installation on a non EAV DASD drive, then add the EAV device after the installation using the tools provided in the s390-utils package.
PackageKit component
If you are being asked repeatedly to enter your root password while using PackageKit to update your system via non-Red Hat repositories, you may be affected by the PackageKit issue described in Section 2.11, “Desktop”.