I don't use "warranty period" as a sign of quality because, these years, I believe it's a sign of Maintained Inventory.
A 2-year warranty means "We plan on new factories, new robotics, and therefore new models to be in production and we and our distributors won't be holding these 2-Year Models on our shelves - we'll sell those and fill our shelves with new models."
The 5-year models are saying, "Our distributors have signed an agreement to maintain shelf-space filled with this product for that time period OR they'll replace the product with a newest model at no additional cost."
And this is usually what they do. This means "finding an exact replacement" is pretty tough. Not impossible. A 2-year warranty replacement in Year 4 would probably qualify as "impossible".
For a reseller-distrib like CDW, for example, we're a big enough customer so that, in Year 4 of a 5-year-warranty, they'll say, "Sorry - that model's long gone."
WHAT?!! We need that EXACT model for this RAID!
And they'll offer to trade us - old drive for new - for that entire RAID. This way, they get working Old Models for their inventory, and we get all new drives. They only have to do that for a few customers, and now they have Old Models back in inventory.