You can copy the Lightroom 5.7 catalog file to the raid drive and then connect the drive to the other computer.
We will also be needing to install the Lightroom on the other computer as well.
You can download the Lightroom from the below mentioned Link.
Thank you for that advice deepakgahlot. Would it work to export my entire catalog as a new catalog to the RAID then attach the RAID to the new computer on which I have installed LR5.7.1?
No need to export, just use your OS tools to copy the catalog file and its preview folder.