WDA, SBHM, and older History Modules are available from WPC. For a specific quote, tell us your requested drive size, whether you need single or dual drives, and whether or not you require redundancy.

The History Module (HM) provides file server capabilities for the Honeywell LCN.  The HM takes continuous history, which can be used for event or error tracking.  History modules can be configured with redundant drives for improved reliability.