The most expensive CPUs in your data centre aren't the ones doing the most work – they're the ones sitting idle waiting for storage. Here's why I/O latency is a hidden CPU tax.

Oracle RAC is sold as a high-availability solution, but its real cost – in licenses, complexity and the hidden assumption that losing a node doesn’t count as an outage – is rarely made explicit.

Oracle database licensing is eye-wateringly expensive per CPU core – and storage costs, often seen as prohibitive, represent a surprisingly small fraction of the total three-year spend.