Read-only and read-write interfaces

OSIsoft provides both read-only and read-write options of many interfaces. Due to the inherent security risks associated with writing to the data source, OSIsoft recommends using the read-only option when possible.

• If you do not need to write to the data source, select the read-only version of the interface. For more information about the read-only version of the interface, or if you are migrating from a read-write version to a read-only version and want to view the migration procedure, see the Read-only versus Read-write FAQ document on the OSIsoft Documentation site: Read-only versus read-write interfaces. If a read-only version is not available, disable interface updates to the data source. See the Disable read-write interface updates to the data source section of this document.

• If you need to write to the data source, select the read-write version of the interface and secure your points in the following ways:

  • Create an output point whitelist file that is secured so that only authorized users can change it. See Secure output points using a whitelist file.

  • Isolate output points using a separate interface instance from the input point interface instance.