Initialism of resource consumption accounting.
"The new software module tracks resource consumption accounting (RCA) to optimize server usage across the data center."
In plain English: RCA is an old-fashioned brand that used to make popular music records and radios before it was bought by another company.
"The RCA logo on my old radio is faded from years of use."
Initialism of Radio Corporation of America: a US communications and entertainment corporation.
"The RCA logo on the vintage television indicates it was manufactured by the historic American electronics company."