HOW TO
Instructions provided describe how a map cache built in ArcGIS Server 10 can be used in previous versions of ArcGIS Server.
After the above is satisfied, copy the _alllayers folder containing the cache tiles from the ArcGIS Server 10 installation to the previous version's ArcGIS Server \ArcGISCache directory. You can use a commercially available file management utility like XCopy. When the map service is restarted, the cache should be recognized.
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