Distributed Index Handler 25.4
Distributed Index Handler Help

# Back up the Content components

The DREBACKUP index action allows the DIH to back up the data in its child Content components, to create a safe copies of the data. You can subsequently use a DREINITIAL index action to restore the backed up files to the Content components.

To back up Content

1. Send a DRECOMPACT index action to the DIH to compress the connected Content components (see Compact the Child Servers).

2. Send the following action from your Web browser to copy all the Content `*.DB` files to a new location:

       http://DIHhost:IndexPort/DREBACKUP?Path=Path

   When you send this action to the DIH instead of to Content, note:

   - `DIHhost` is the IP address (or name) of the machine on which the DIH is installed, `IndexPort` is the number of the port that you use to send index actions to the DIH, and `Path` is the path to the location where you want to create the Content backup.
   - If the Content components are installed on different machines, you must ensure that the specified path is a valid directory path on each of the machines.
   - If any two Content components are installed on one machine, you can specify a relative path. However, you must ensure that multiple Content components do not back up to the same location.

To restore backed-up data to Content

- Send the following action from your Web browser to restore the files to all databases on all child Content components:

      http://DIHhost:IndexPort/DREINITIAL?Path=Path

  When you send this action to the DIH instead of to Content, note:

  - `DIHhost` is the IP address (or name) of the machine on which the DIH is installed, `IndexPort` is the number of the port that you use to send index actions to the DIH, and `Path` is the path (previously specified in DRECOMPACT) to the location to store the Content backups.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Distributed Index Handler 25.4

Topic Title: Back up the Content components