![]() ![]() Then in VMware (for beginners), the vCPU is converted to Mhz or Ghz and can be shared among VMs.so the number of vCPUs is more of a max limit to what the VMs can use and not literally assigning physical CPUs to the VMs. So even with tools like Veeam one or other resource tools, you may need to run them for long periods of time to know what and when the resource is required.then also for you to make a decision if the recommendation is valid or not.įor example, the HR server uses 8 vCPU on the last day of the month & 2nd day of the month (hits 85% CPU usage for 2 hours on those 2 days, but uses 5% on normal days), but if you assign 4 vCPUs, the jobs for those 2 days extends to 5 hours each. Like if you have a HR server that runs payroll, it may be very busy only 1 or 2 days before payday while it only updates Finance or ERP servers a few days after payday. Some servers (or VMs) like file servers use resources when there are users accessing files while others like report generating servers run at certain intervals (hourly, daily, weekly or even monthly). There is no easy way to calculate how much processing power each VM needs as literally all servers (VMs or physical server) uses resources differently or even at different times. I wish there was some tool or web link which can take our current socket and core count and then provide info as how the vCPUs allocation should be based on best practices for the vms :) ![]()
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