F5 BIG-IP Sizing Requirement
There is ongoing requirement for putting all internet facing applications behind web application firewall, and WAF TPS consume F5 CPU and memory and other parameters as well. Fear is that we may fall into any issue in future due to ongoing increase in services shifting on BIG IP F5 boxes.
Could you gyz please add your comment how we can procced with our boxes sizing customer need is that to check if we going to exceed our resources in future however there is any negative impact.
There is any method.
for raw estimation:
(your_targeted_tps at 5th year / 80% ) x 4 = required F5 datasheet tps
5th year: because usually company's asset depreciation is calculated for 5 years.
80% ==> so you have 20% buffer
x 4 ==> because usually f5 datasheet spec is cut by 75% for heavy processing (WAF, complex irules, etc.)