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I recall from my years as a small business sysadmin that some of the Smart-UPS systems that have a serial connector for management access require a special seri
by russellendicott 6y ago
I recall from my years as a small business sysadmin that some of the Smart-UPS systems that have a serial connector for management access require a special serial cable. If you plug in a “standard” serial cable it cuts power to the whole UPS unit and your whole server rack loses power even if the batteries are fully charged. That was a bad day.
- jlgaddis 6y agoIndeed. I, too, learned that lesson the hard way many, many years ago! I also know several other folks who learned that the same way that you and I did. Although I'm a bit "old school" and generally prefer serial (RS-232) ports, this is one case where the change to USB really was a huge improvement!
- quercusa 6y agoYep, sometimes there's nothing as loud as silence!