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  • This isn't an answer but a useful place to look would be somewhere like here or here - and there's different flavours of SMR . Density could be a clue but I have a pair of 14tb drives with lots of platters and helium that are CMR. I might bounty a reliable non-lookup option
    – Journeyman Geek
    Commented Jun 9 at 13:33
  • unix.stackexchange.com/a/352672/27961 also seems interesting
    – Journeyman Geek
    Commented Jun 9 at 13:35
  • 1
    While a drive implementing host-aware or host-managed zones probably implies that it is an SMR drive, it doesn't mean that not implementing any of those (i.e., the zones are "drive-managed") implies that it is a CMR drive. See zonedstorage.io/docs/introduction/smr
    – Tom Yan
    Commented Jun 9 at 17:30
  • Also sg3_utils is a set of SCSI utilities, whether any of them would work depends on the implementation of SCSI-ATA Translation Layer (SATL) in use (in addition to the support of corresponding ATA commands on the drive). When the drive is attached to a SATA/AHCI controller (well at least an onboard one), the SATL leveraged is implemented in the OS / kernel. When it's behind a USB/UAS bridge, it is implemented in the firmware bridge.
    – Tom Yan
    Commented Jun 9 at 17:32