5.5. Disk Space and Memory Requirements

Red Hat Enterprise Linux, like most modern operating systems, uses disk partitions. When you install Red Hat Enterprise Linux, you might have to work with disk partitions. For more information, see Appendix A, An Introduction to Disk Partitions.
If you have other operating systems installed on your system, the disk space they use must be separate from the disk space used by Red Hat Enterprise Linux.

Note

For AMD64/Intel 64 and ARM systems, at least two partitions (/ and swap) must be dedicated to Red Hat Enterprise Linux.
To install Red Hat Enterprise Linux, you must have a minimum of 10 GiB of space in either unpartitioned disk space or in partitions which can be deleted. For more information on partition and disk space recommendations, see the recommended partitioning sizes discussed in Section 8.14.4.4, “Recommended Partitioning Scheme”.
Red Hat Enterprise Linux requires minimum the following amount of RAM:
Installation type Minimum required RAM
Local media installation (USB, DVD) 768 MiB
NFS network installation 768 MiB
HTTP, HTTPS, or FTP network installation 1.5 GiB

Note

It may be possible to perform the installation with less memory than listed in this section. However, the exact requirements depend heavily on your environment and exact installation path, and they also change with each new release. Determining the absolute minimum required RAM for your specific use case therefore requires you to test various configurations, and periodically re-test with each new release.
Installing Red Hat Enterprise Linux using a Kickstart file has the same minimum RAM requirements as a manual installation. However, if you use a Kickstart file that runs commands which require additional memory or write data to the RAM disk, additional RAM might be necessary.
For more information about the minimum requirements and technology limits of Red Hat Enterprise Linux 7, see the Red Hat Enterprise Linux technology capabilities and limits article on the Red Hat Customer Portal.