# Administer the Data Index

You can use the following index actions to administer the IDOL Server Data index:

DREBACKUP | Backs up the IDOL Server data index.
DRECOMPACT | Compacts the IDOL Server data index.
DREDUPLICATE | Removes or tags duplicates in the IDOL Server data index.
DREFLUSHANDPAUSE | Prepares IDOL Server for a snapshot (hot backup).
DREINITIAL | Resets the IDOL Server data index.
DREMODIFYTERMWEIGHT | Modifies the IDOL Server term weight file.
DREQUERYSUMMARYMANAGEMENT | Updates the query summary stop phrase list or white list.
DREREDISTRIBUTE | Redistributes content when you update the child server architecture.
DREREGENERATE | Regenerates one or more data indexes.
DRERESIZEINDEXCACHE | Dynamically resizes the index cache.
DRESPELLCHECKCACHE | Controls the spell check correction cache.
DRESYNC | Flushes the index cache to disk.
DREVALIDATE | Validates specified Content sub-indexes.

NOTE: Index actions are case sensitive. All index actions must be sent to the Distributed Index Handler DIHPort.

You can control the users that can send index actions by configuring authorization roles. See Authorization Roles Configuration Parameters.

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