your server is designed so that you can install or exchange drive modules while the server is operating. the server should be turned off before opening it to install or exchange other key components.
when working with the server hardware, always guard against static electricity, which can damage electronic components. touch a metal surface before handling ram or an expansion card or working inside the server.
when installing components, it’s wise to wear a wrist grounding strap that prevents static electricity from discharging into electronic components.

you can also arrange for an apple-authorized service provider to install or replace components in the server. for details about this service, see the support information that came with your server. additional support information is available at the apple support web site: www.apple.com/support