SMR technology is a timebomb waiting to go off in a ZFS file system. This quote from Slashdot...
Want to know more? Start with this community thread Update: WD Red SMR Drive Compatibility with ZFS
TrueCommand has a built-in check for known WD SMR drives on connected TrueNAS servers. However, if you don't use TrueCommand, you can still use this bash script to help you identify SMR drives. The script doesn't limit checks just to the WD NAS range of drives (RED), but extends this to any WD SMR drive listed in its database (BLUE, BLACK, etc.).
The latest version identifies known Seagate, Toshiba and WD `Ultrastar` (formerly HGST) SMR drives as well.
As the database of SMR drives is updated whenever a new SMR drive is identified, always download and run the latest version of this script when checking your TrueNAS drives.
Want to know more? Start with this community thread Update: WD Red SMR Drive Compatibility with ZFS
TrueCommand has a built-in check for known WD SMR drives on connected TrueNAS servers. However, if you don't use TrueCommand, you can still use this bash script to help you identify SMR drives. The script doesn't limit checks just to the WD NAS range of drives (RED), but extends this to any WD SMR drive listed in its database (BLUE, BLACK, etc.).
The latest version identifies known Seagate, Toshiba and WD `Ultrastar` (formerly HGST) SMR drives as well.
As the database of SMR drives is updated whenever a new SMR drive is identified, always download and run the latest version of this script when checking your TrueNAS drives.