Reports the CPU usage percentage for this Virtual System averaged over the last 1 hour, across all cores. This longer window is what capacity planning uses to distinguish a genuinely under-provisioned tenant, with a consistently high hourly average, from one that just has occasional bursty peaks that don't show up once averaged over an hour. Example: a tenant with vsxStatusCPUUsage1hr consistently above 70% across multiple days is a strong candidate for a resource-weight increase or migration to a less-loaded chassis, unlike one with occasional 1-second spikes but a low hourly average.