[stef]

When first solid-state drives appeared, there was no Trim command. There was no easy way for a drive to reclaim unused blocks of user data (i.e., data exposed to a host as drive contents) for the wear-leveling process.

To mitigate this problem, manufacturers did a clever trick: they began producing file-system-aware solid state drives!

Some articles deny the existence of such a trick, but the truth is that some ancient solid-state drives were capable of parsing a partition table and an NTFS file system to locate unallocated (free) clusters and reclaim their blocks for the wear-leveling process (thus, wiping remnant data in these clusters).

Izvor: https://dfir.ru/2020/06/12/trim-and-unallocated-space/

Realno, ne možemo znati što sve firmware radi. Također je pitanje kako GC funkcinira u RAID scenarijima. Tada TRIM isto nije dostupan.