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TIBCO ActiveSpaces® - Enterprise Edition 5.0.0

# Multiple Mirror Sites

When using multiple mirror sites, each mirror progresses independent of the others. When deciding which site to use as a new primary, determine which checkpoints are available at each site.

Procedure
1. List the checkpoints at each site.
   The checkpoint ID, checkpoint Name, location, and timestamp are displayed as follows:

       tibdg -r http://rs1:8080 -g DR1 checkpoint list
       ID  	NAME      DIRECTORY          TIMESTAMP
       ….
       <checkpoint ID>   (periodic)  <checkpoint location> 12:35:00
       <checkpoint ID>   (periodic)  <checkpoint location> 12:40:00
       tibdg -r http://rs2:8080 -g DR2 checkpoint list

       ID  	NAME      DIRECTORY          TIMESTAMP
       ….
       <checkpoint ID>   (periodic)  <checkpoint location> 12:35:00

2. To minimize data loss, use the mirror with the most up-to-date checkpoint. When changing primary grids, checkpoints subsequent to the latest checkpoint at the new primary are not valid. Use the following command to set the primary grid:

       tibdg -r http://rs1:8080 gridset setPrimary DR1

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TIBCO ActiveSpaces® - Enterprise Edition

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