WebGISDR backup fails with HTTP 301 redirect on portal sharing endpoint and ArcGIS Data Store connection error

Description

Attempts to run the Web GIS Disaster Recovery (WebGISDR) tool to back up the ArcGIS Enterprise portal fails and returns the following error message:

Error: 
The response status code is 301 for the request:
https://<portal_host>:7443/arcgis/sharing/rest
Redirect to URL:
https://<redirect_portal_host>:7443/arcgis/sharing/rest

Unable to connect to https://<datastore_host>:2443/arcgis/datastoreadmin.
Check the URL and restart the Relational ArcGIS Data Store service if necessary.

Exiting the WebGIS DR utility.

Cause

• The WebGISDR tool properties file contains an outdated or incorrect portal URL, resulting in the HTTP 301 redirect issue.
• The required communication ports 2443 and 9876 between the ArcGIS Enterprise portal and the ArcGIS Data Store machine are close.

Solution or Workaround

Update the portal admin URL in WebGISDR

1. Open File Explorer and navigate to the WebGISDR tool properties file in the following directory:

C:\Program Files\ArcGIS\Portal\tools\webgisdr\

2. Right-click the webgisdr.properties file, click Open with and select a text editor. For this example, Notepad is used.
3. In the Notepad editor window, press Ctrl + F and search for PORTAL_ADMIN_URL= to locate the portal URL.
4. Replace the old or incorrect value with the current portal URL. Below is the example of a valid Portal Administrator Directory URL format.

https://<portalhostname.domain.com>:<port>/arcgis/portaladmin

5. Click File > Save to save the changes.
6. Close the Notepad editor window.

Open ports 2443 and 9876

Open the ports 2443 and 9876 to enable communication between the ArcGIS Enterprise portal and the ArcGIS Data Store machine. Refer to ArcGIS Enterprise on Windows and Linux: ArcGIS Data Store for more information.

Note:
If necessary, notify and coordinate with the organization's IT team to open the ports.