On 5/10/20 22:06, Zygo Blaxell wrote: > > The exceptions would be data extents that are explicitly deleted > (TRIM command), and it looks like a sequential overwrite at the _end_ > of a zone (i.e. starting in the middle on a sector boundary and writing Do these SMR drives generally support TRIM? What other spinning drives support it? I was surprised to recently discover a spinning drive that supports TRIM. It's a HGST Z5K1 2.5" 5400 RPM 1TB OEM drive I pulled from an ASUS laptop to replace with a SSD. TRIM support is verified by hdparm and by running the fstrim command. There's nothing in the literature about this being a hybrid drive. Doesn't seem likely, but could it be shingled? Phil
