A legal hold is a process that an organization uses to preserve all forms of potentially relevant information when litigation is pending or reasonably anticipated.
[1] The legal hold is initiated by a notice or communication from legal counsel to an organization that suspends the normal disposition or processing of records, such as backup tape recycling, archived media and other storage and management of documents and information.
A legal hold will be issued as a result of current or anticipated litigation, audit, government investigation or other such matter to avoid evidence spoliation.
Legal holds can encompass business procedures affecting active data, including backup tape recycling.
amendments to the United States Federal Rules of Civil Procedure (FRCP) address the discovery of electronically stored information (ESI) (aka e-discovery), expanding the use of a "legal hold" beyond preservation of paper documents.