This article contains information on ndMirror, which replaces the Local Document Service. 

NetDocuments ndMirror is a paid add-on service connected to a customer’s repository. ndMirror is designed to back up data and metadata to a local server or network drive. Its primary purposes are for disaster recovery and to facilitate external searching. Metadata is stored in SQL databases, which offer access to metadata for queries.

The documents are stored on the customer’s file system in their native format, along with a SQL database that contains document profile data such as document name, file format, creator and creation date, last modified user and date, the document ACL, and all other configuration attributes defined by the customer. The documents will be stored in the customer’s local file system using a scheme defined by the customer that dynamically folders the documents in a folder structure based on the documents’ profile attributes. ndMirror can also be integrated with an external searching application to provide a way of searching against the local storage system, hence the name "mirror". It is a one-way synchronization service, and so it is simply a locally-stored reflection of the online data.

NOTE: ndMirror is designed as a replacement to the current Local Document Service, and is a paid add-on to your NetDocuments Service Subscription. Please contact NetDocuments Sales for more information.

What can ndMirror do for me?

Download the ndMirror Technical Documentation

To download the latest version of ndMirror (version, please contact NetDocuments Support.


The user installing the software must be a member of the administrators group on the computer, the SQL Server, and to the file system. The user also has to be a NetDocuments repository administrator and have rights to the NetDocuments Cabinet being synchronized.

The customer must provide a server or data storage location. ndMirror is a client-side agent that manages the storage location and related database.  

ndMirror is supported on the following Microsoft Windows operating systems:

  • Windows 7 SP1; Windows 10; Windows Server 2012 R2 64bit; Windows Server 2016 64bit.
  • Microsoft .NET 4.6+
  • SQL Server 2012 R2 or SQL Server 2014.

Minimum Hardware Requirements

  • CPU and Memory - Minimum required for the Windows OS you are using.
  • Sufficient disk space is required to store all documents locally from your online cabinets. As your online storage grows, your local storage space will also need to grow.

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