In an example, a method of allocating storage objects of a virtual machine across storage devices in a computing system includes: collecting capabilities of the storage devices in the computing system; assigning a tier of a plurality of tiers to each of the storage devices in the computing system; collecting performance data for the storage devices across a period of time; analyzing the performance data and the capabilities to determine a placement of storage objects of the virtual machine across the plurality of tiers; and moving the storage objects to respective ones of the storage devices based on the assigned tiers.