You can read all over the internet that it’s important to put your hard drives into their original slots, e. g. when you migrate to a new Synology device, or when you need to remove the drives to add memory.

This is simply not true.

As expected DSM, which is a flavor of “Linux,” will automatically discover your physical partitions based on the GUIDs each partition has, and then reassemble your volumes. I just tested this (i. e. intentionally put the drives into the device in the wrong order) with a JBOD volume, and I had no issues whatsoever. I cannot see why this should be different with SHR or RAID-5, for example.

If you have also tested this, please let me know how it went for you.