[The Exiled]

AnandTech SMR članak

SMR is a relatively new tactic that HDD vendors use to increase storage density over HDDs that use 'standard' conventional magnetic recording (CMR), but the tech comes with notably slower performance in some workloads than 'normal' hard drives. Some users claim that SMR drives also do not work correctly when rebuilding ZFS arrays, which means customers could be exposed to data loss. Users have also complained that the drives won't work in some NAS when added to existing RAID arrays.