V7 introduced HUGE, segmented and partitioned file support, and many new cache options for performance. V7.12 increased the PAGE_SIZE default from 2048 bytes to 8192 bytes. Keep this in mind with indexes from previous versions, as the page size is used as the index node size.
Cleanly shut down any existing V7 Servers and remove remaining transaction logs (see Steps for a Clean Upgrade). V9 introduces a new transaction log format.
Store a copy of the V7 dynamic dump restore utility (ctrdmp) with any remaining backup files in case of future recovery. Consider validating a fresh V9 dump and restore and review your backup procedures at this time.
