
Chapter 2. Hardware Architectures and Linux Kernels
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If you install the Red Hat Enterprise Linux 3, 4 or 5 hugemem kernel ensure that any proprietary
drivers you are using (e.g. proprietary multipath drivers) are certified with the hugemem kernel.
In Red Hat Enterprise Linux 2.1, the smp kernel is capable of handling up to 4GB of RAM. The
kernel-enterprise kernel should be used for systems with more than 4GB of RAM up to 16GB.
In Red Hat Enterprise Linux 5, a 32 bit kernel is always a hugemem kernel so there is no need to
install a special kernel.
2.3. The 64 bit Architecture
This is the architecture that should be used whenever possible. If you can go with a x86_64 platform
ensure that all drivers you need are supported on x86_64 (for example proprietary multipath drivers)
Furthermore, ensure that all the required applications are supported on x86_64 as well.
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