Assuming you get hired after “only” your first postdoc:-). Some people do two or even three of those (though two longer ones can take more time overall than three shorter ones). And yet you hear of people that manage it even then, especially if there is even a temporary upswing somewhere e.g. a “cluster hire”.
These days it seems difficult to speak of what is “standard” b/c the rules seem to have changed radically since the Tea Party rose to power, and rather than things returning to “normal” after the various recessions semi-recently, they instead seem to be shifting to an entirely different state altogether.
It is so bad that a huge fraction of people getting PhDs won’t find jobs in the same specialty area - e.g. physics has been notorious for this for decades already, even though someone trained in that rigorous discipline often has little trouble moving to another area where they are often in high demand:-).