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Veronica Dulong contributes these numbers.
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Descriptive Text
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OIS Services -- Email, Network
Anne Silvester contributes these numbers.
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% Uptime
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h5. How ISDA calculates Uptime for 24x7 services
(from an email 2/25/2010)
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ISDA Services -- Wikis, Stellar, Data Warehouse
Pat Sheppard contributes these numbers, relying on data from Anne for servers that are run in OIS.
% Uptime | FY08 Q2 | FY08 Q3 | FY08 Q4 | FY09 Q1 | FY09 Q2 | FY09 Q3 | FY09 Q4 | FY10 Q1 | FY10 Q2 | FY10 Q3 |
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| 99.6 | 99.6 | 99.9 |
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| 99.7 | 99.4 | 99.6 |
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| 98 | 99.9 | 99.9 |
Descriptive Text
here keep a copy of the text that wants to be in the righthand column of the Drupal pageHere is text from Pat Sheppard that goes into wonderful detail about deriving the measures.
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Wikis: analyzed FY10 Q1 - Q3 for wikis production hosts (asterope/vega and confab), and counted anything that would result in unavailability from the user perspective (so either of database or web server, but not things like high swap utilization or NTP). Q1: Total: 7 hours, 41 minutes downtime (3 hours was during scheduled vega \-> asterope cutover) Assume 2160 hours in one quarter (30 * 3 * 24) = 99.6% uptime. Q2: Total 7 hours, 45 minutes (1 hour 15 minutes confab migration to OC11, 6.5 hours for asterope hardware issue) Assume 2160 hours in one quarter (30 * 3 * 24) = 99.6% uptime. Q3: Total 1 hour = 99.9% uptime. Stellar: application metrics for Nagios. FY10 Q1: 7 hours downtime = 99.7% uptime. FY10 Q2: 12 hours downtime = 99.4% uptime. FY10 Q3: 7.5 hours total (4.5 for move to OC11) = 99.6% uptime Data Warehouse: FY10 Q1: Total 44 hours = 98% uptime. FY10 Q2: 3 hours downtime = 99.9% uptime. FY10 Q3: 3 hours downtime = 99.9% uptime. |