SSDs

Why SSDs Can Slow Down When They Are Nearly Full

A solid-state drive can still have free space and yet become less consistent at writing data as it fills up. You might notice a large file transfer slowing down, an installation taking longer than expected, or a heavily used computer feeling less responsive when storage is almost exhausted. The reason is not simply that an SSD has to “search harder” for empty space. Flash storage has rules about how data can be written and erased. When plenty of unused space is available, the drive has more flexibility to work within those rules. When little space remains, that work can become more complicated.