![Amazon.com: Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX : Electronics Amazon.com: Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX : Electronics](https://m.media-amazon.com/images/I/61hjIwjTQmL.jpg)
Amazon.com: Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX : Electronics
![Western Digital Gold WD201KRYZ 20 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Walmart.com Western Digital Gold WD201KRYZ 20 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Walmart.com](https://i5.walmartimages.com/asr/28bd95d3-82f7-48c1-bc81-c11caf98de83.9d33a6b3f4ec6e0edb18a792bd97d8d3.jpeg)
Western Digital Gold WD201KRYZ 20 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Walmart.com
![TOSHIBA Toshiba 3.5 "Built-in HDD 16TB (CMR) 7,200rpm 512MB Cache SATA 24x7 RVS equipped NAS Optimal hard disk MN08ACA16T - Walmart.com TOSHIBA Toshiba 3.5 "Built-in HDD 16TB (CMR) 7,200rpm 512MB Cache SATA 24x7 RVS equipped NAS Optimal hard disk MN08ACA16T - Walmart.com](https://i5.walmartimages.com/asr/7d880a6c-b2c4-47ae-871b-b4f5c7305928.9bd82e6d52a7e8c83ab6d09c4cdc4c05.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
TOSHIBA Toshiba 3.5 "Built-in HDD 16TB (CMR) 7,200rpm 512MB Cache SATA 24x7 RVS equipped NAS Optimal hard disk MN08ACA16T - Walmart.com
![Differences between SMR, CMR, LMR and PMR hard disk: does it have something to do with Linux? | Linux Addicts Differences between SMR, CMR, LMR and PMR hard disk: does it have something to do with Linux? | Linux Addicts](https://www.linuxadictos.com/wp-content/uploads/hdd-disco-duro-diferencias-cmr-smr-pmr.jpg)