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Red Hat has established fixed life cycles for Red Hat Enterprise MRG which will allow customers and partners to plan their resources, certifications, and implementations accordingly.
To facilitate customer maintenance cycles, each Red Hat Enterprise MRG will be supported via errata Service Packs. These Service Packs will contain security, bug fix, and enhancement errata that have been qualified on the appropriate Red Hat Enterprise MRG release. Security errata will be the only errata released independent of Service Packs. To minimize the impact of security errata, Red Hat has a policy of back-porting security fixes whenever possible.
For a period of up to seven years from the initial release (General Availability), Red Hat will provide errata maintenance for Red Hat Enterprise MRG. To facilitate and retain the high standard of stability inherent in the Red Hat enterprise products, the maintenance period is divided into two phases of maintenance. The first phase lasts two years. The second phase lasts from the start of year three to either the end of year seven or the End of Life date of the parent Red Hat Enterprise Linux, whichever occurs sooner.
This table summarizes the two support phases after General Availability (GA) of a major release.
| Support Phase | Years After GA | Support Provided |
|---|---|---|
| Phase 1 | 0 - 2 Years | Full Support; see Scope of Coverage |
| Phase 2 | 2 - 7 years or the End of Life date of the parent Red Hat Enterprise Linux, whichever occurs sooner | Maintenance only: At a minimum, qualified security errata of critical impact will be released. |
Start Date: General Availability
End Date: 2 Years from General Availability date
Description: During the full support phase, support will be provided for both production and development use according to the published scope of coverage for Red Hat Enterprise MRG, available at: http://www.redhat.com/support/policy/soc/production/. During the Full Support phase, all available and qualified errata will be applied via Service Packs (or as required for Security level errata). Updated ISO images will only be provided during the Full Support phase.
Start Date: 2 Years from General Availability (end of Full Support)
End Date: 5 Years from end of full support (seven years from General Availability), or the End of Life date of the parent Red Hat Enterprise Linux, whichever occurs sooner
Description: During the maintenance phase, support will be provided for production use only according to the published scope of coverage for Red Hat Enterprise MRG, available at: https://www.redhat.com/support/policy/soc/production/. During this phase, at a minimum, qualified security errata of critical impact (definition at http://www.redhat.com/security/updates/classification/) will be released.
General Availability: June 19, 2008
Full Support: June 19, 2008 - June 18, 2010
Maintenance: June 19, 2010 - March 31, 2014 (Coincident With End of Maintenance Support for Red Hat Enterprise Linux 5)
General Availability: June 19, 2008
Full Support: June 19, 2008 - June 18, 2010
Maintenance: February 29, 2012 (Coincident With End of Maintenance Support for Red Hat Enterprise Linux 4)