This blog article explains VMware ESXi claim rules in general and the differences between core and SATP (Storage Array Type Plugin) claim rules. In support we get a lot of questions about claim rules for several reasons. One could be performance tuning while another one could be the usage of a 3rd party multipathing plugin. With a claim rule you can pretty much define how a device of a certain vendor should behave if the the default setting won’t be sufficient. But let’s start from the beginning. There are two kind of claim rules:
