Formal title: UNIX Upgrades for NHHDA and EAC/AA

Current Status

CPC Consultation
Committee Decision
Awaiting Implementation


Users of the NHHDA and EAC/AA systems requested that Elexon makes an early decision about future operating platforms for this systems, in order for Market Participants to be able to plan and budget for hardware purchases. Currently NHHDA and EAC/AA Systems are developed and supported by Elexon on Hewitt-Packard (HP) AlphaServers running on the Tru64 Unix 5. 1b operating system. These servers are being phased out by HP and, while no operational issues are expected in so far that HP will continue to support the operating system until 2011, an early decision in respect of future platforms will provide clarity to the industry. CP1187 proposes a number of potential solutions for the operating system(s) that will replace Tru64 Unix 5. 1b as the supporting platform for NHHDA and EAC/AA. After discussion by the Software Technical Advisory Group (STAG) on 25 January 2007 and an email survey the options are: HPUX, Sun Solaris and IBM AIX. There is Market Participant support for all three of these options to varying degrees and therefore Elexon requires answers to all questions about each option found on the Impact Assessment form to help the Supplier Volume Allocation Group (SVG) to make an informed decision on which option to choose.


CP1187 v1. 0 was raised on 2 February 2007. CP1187 v1. 0 was issued for Industry Impact Assessment as part of CPC00596. CP1187 v1. 0 was presented to the SVG on 1 May 2007 for a decision on further progression. The SVG endorsed Option 2 Sun Solaris and made a recommendation to the BSC Panel to approve CP1187 v2. 0 for implementation in the February 2008 Release. CP1187 v2. 0 was raised on 1 May 2007, and included the chosen solution – Sun Solaris. The BSC Panel endorsed the progression of CP1187 v2. 0 and approved CP1187 v2. 0 for implementation in the February 2008 Release. CP1187 v2. 0 was implemented on 28 February 2008 as part of the February 2008 Release.


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