Converting RRDs - 32-bit to 64-bit architecture migration

When migrating from 32-bit to 64-bit architecture, note that the 32-bit RRDs are incompatible and need to be converted to the new architecture. This can be accomplished by converting the RRDs to XML format using the 32-bit RRDTool binary and restoring the XML file using the 64-bit architecture RRDTool binary.