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Retail SLA Proposed Changes

Retail SLA Proposed Changes. RMS/TDTWG August 2008 Trey Felton IT Account Manager. Apr – Jun 2008. Sample Data. For complete data set see: Retail SLA_Transaction Stats.xls. Weekend Transaction Volume during Outage Window Timeframes (1-year average vs 3-month average).

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Retail SLA Proposed Changes

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  1. Retail SLA Proposed Changes RMS/TDTWG August 2008 Trey Felton IT Account Manager

  2. Apr – Jun 2008

  3. Sample Data For complete data set see: Retail SLA_Transaction Stats.xls

  4. Weekend Transaction Volume during Outage Window Timeframes (1-year average vs 3-month average) Current Release Window Proposed Release Window

  5. Summary • SLA Proposed Changes • Add 6 hours to Week 1 • Currently 12 hours • Move 36-hr release window to Week 4 • Currently in Week 2—busiest week • Add a 12-hour outage window in Week 5s (Mar/May/Aug/Nov) • Not in current SLA • November will not be used for a release or week 5 outage • Rationale • 5-week Months become general outline for major releases (Mar/May/Aug/Dec) • Extra weekend gives additional outage window opportunity • Remaining months will be reserved for minor releases

  6. Additional Considerations • For 2009 • Move November Week 4 Outage to December Week 2 • To accommodate for Thanksgiving Holiday • Move May Release up 1 week (to Week 3) • To accommodate for Memorial Day • Analyze Quarterly Release concept • For 2010 • Reduce monthly minor release windows if possible

  7. TDTWG Recommendations • Limit Maintenance Window request to 15 hrs • Yes • Reduce Release Outage to 30 hrs • Cannot Support • Marketrak available 8am – Noon on Saturday • Researching, along with other data for MT Task Force • Have 1 weekend a month with zero outages • With our current systems, ERCOT cannot support • Targeted for 2010

  8. Proposed Release Calendar (2009)

  9. Proposed Maintenance/Release Windows for 2009 MAINTENANCE • 1st and 2ndSunday– 6:00am until 9:00pm Sunday (15 hours) • Option 2: Sunday– 9:00am until 12:00am Monday (15 hours) • 3rd and 5thSunday—8:00am until 8:00pm (12 hrs) • Option 2: Sunday—10:00am until 10:00pm (12 hrs) • RELEASE: 4th weekend– 12:00pm Saturday until 12:00am Monday (36 hours) • Option 2: 10:00am Saturday until 10:00pm Sunday (36 hours)

  10. Maintenance Outages (since Jan 1, 2008) ERCOT Proposed SLA (18 hours) TDTWG Proposed (15 hours) Current SLA (12 hours) Average = 9.8 hrs

  11. Releases (2007-2008) Current / Proposed SLA (36 hours) TDTWG Proposed (30 hours) Average = 26.5 hrs 37% took more than 36 hrs 50% took more than 30 hrs

  12. Marketrak

  13. Backup Slides

  14. Release Outage (apportioned time) Variations • June Release: Planned 11 hrs, Actual 24.8 hrs (Prod verification failure; rollback) • July Release: Planned 9 hrs, Actual 9 hrs • Average Release has been 24 hrs (since Jan 1, 2008)

  15. 2008 Net Service Availability 15 July, 2008 ERCOT Confidential

  16. Releases (2008) Current / Proposed SLA (36 hours) TDTWG Proposed (30 hours) Average = 24 hrs

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