Topic: Planned Triennial Power Maintenance at the CBU backup site WILL cause a complete PDA/NDE system outage during the date/times below.

Date/Time Issued: September 05, 2019 1652Z

Product(s) or Data Impacted: All products being Ingested and/or Disseminated from the CBU site WILL be affected.

Date/Time of Initial Impact: September 09, 2019 1500Z

Date/Time of Expected End: September 13, 2019 2000Z

Length of Event: 4 days and 5 hours

Details/Specifics of Change: The PDA CBU backup environment will be affected by scheduled Triennial Power Maintenance during the times listed above. This power maintenance will require the PDA/NDE systems to be down to avoid damage from power drops and/or spikes. The system shutdown process will begin Monday September 9th at approximately 1500Z with an estimated power up date/time of Friday September 13 at approximately 2000Z. If there are issues found during the maintenance that require ordering of parts, the power up may be delayed and an update to this notification will be distributed with an new estimated Expected End date/time.

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Web Site(s) for applicable information: N/A