You can download it directly from 1 of our mirrors.
Make sure you are logged in as root and execute the following command to download it:
# wget http://mirror.global-layer.com/files/areca_cli.zip
Once you have downloaded it, all you need to do is unzip it:
# unzip areca_cli.zip
You can now use the tool to manage your hardware RAID.
There is a readme file included with further instructions.