Western Digital's 'What's Next' event back in May 2022 had seen the announcement of its 22TB platform based on ePMR and OptiNAND (with ArmorCache)
Western Digital 12TB WD Purple Pro Surveillance
Western Digital 22TB WD Gold Enterprise Class SATA
22TB WD Red Pro, WD Gold and WD Purple Hard Drive Released – NAS
WD Gold 22TB HDD Review
Western Digital 22TB WD Purple Pro Surveillance
WD Red Pro 22TB Review
Western Digital 22TB WD Purple Pro Surveillance
22TB WD Red Pro, WD Gold and WD Purple Hard Drive Released – NAS
Western Digital 22TB WD Red Pro NAS Internal Hard
WD Gold, WD Red Pro and WD Purple Pro 22TB CMR HDDs Now Shipping
WD Red Pro 22TB Purple Pro 22TB And Gold 22TB - ServeTheHome
WD Reveal the Ultrastar DC HS760 Dual Actuator 20TB Hard Drive
WD Gold 22TB HDD Review
You can get the recently launched WD 22TB external hard drive for
Western Digital 22TB WD Gold Enterprise Class SATA