![Amazon.com: Seagate 1TB Mobile HDD SATA 6Gb/s 128MB Cache 2.5" Internal Bare Drive (ST1000LM035) : Electronics Amazon.com: Seagate 1TB Mobile HDD SATA 6Gb/s 128MB Cache 2.5" Internal Bare Drive (ST1000LM035) : Electronics](https://m.media-amazon.com/images/I/71au3T8DaQL.jpg)
Amazon.com: Seagate 1TB Mobile HDD SATA 6Gb/s 128MB Cache 2.5" Internal Bare Drive (ST1000LM035) : Electronics
![Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - Western Digital8002FZWX : Electronics Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - Western Digital8002FZWX : Electronics](https://m.media-amazon.com/images/I/81+v-aQ2JxL._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - Western Digital8002FZWX : Electronics
![Amazon.com: Western Digital AV-GP 320 GB AV Hard Drive: 3.5 Inch, SATA II, 16 MB Cache - WD3200AVCS : Electronics Amazon.com: Western Digital AV-GP 320 GB AV Hard Drive: 3.5 Inch, SATA II, 16 MB Cache - WD3200AVCS : Electronics](https://m.media-amazon.com/images/I/51hz0YcaeJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital AV-GP 320 GB AV Hard Drive: 3.5 Inch, SATA II, 16 MB Cache - WD3200AVCS : Electronics
![hard drive - Why does a WD HDD have 12 mb/s random write speed, 24 times as fast as its random read speed? - Super User hard drive - Why does a WD HDD have 12 mb/s random write speed, 24 times as fast as its random read speed? - Super User](https://i.stack.imgur.com/shISL.jpg)
hard drive - Why does a WD HDD have 12 mb/s random write speed, 24 times as fast as its random read speed? - Super User
![Amazon.com: Seagate 1TB Mobile HDD SATA 3Gb/s 32MB Cache 2.5-Inch Internal Bare Drive (ST1000LM024) : Electronics Amazon.com: Seagate 1TB Mobile HDD SATA 3Gb/s 32MB Cache 2.5-Inch Internal Bare Drive (ST1000LM024) : Electronics](https://m.media-amazon.com/images/I/81eaYZB9oeL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Seagate 1TB Mobile HDD SATA 3Gb/s 32MB Cache 2.5-Inch Internal Bare Drive (ST1000LM024) : Electronics
![Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - Western Digital8002FZWX : Electronics Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - Western Digital8002FZWX : Electronics](https://m.media-amazon.com/images/I/716rHNW0jxL.jpg)
Amazon.com: Western Digital_BLACK 8TB Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - Western Digital8002FZWX : Electronics
![WD Blue WD10JPVX - Hard drive - 1 TB - internal - 2.5-inch - SATA 6Gb/s - 5400 rpm - buffer: 8 MB | Dell Canada WD Blue WD10JPVX - Hard drive - 1 TB - internal - 2.5-inch - SATA 6Gb/s - 5400 rpm - buffer: 8 MB | Dell Canada](https://snpi.dell.com/snp/images/products/large/en-ca~4f57fc9b-99eb-49ec-97db-6f3fe90261ab/4f57fc9b-99eb-49ec-97db-6f3fe90261ab.jpg)
WD Blue WD10JPVX - Hard drive - 1 TB - internal - 2.5-inch - SATA 6Gb/s - 5400 rpm - buffer: 8 MB | Dell Canada
![Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD60PURZ : Electronics Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD60PURZ : Electronics](https://m.media-amazon.com/images/I/61qPrCMm1CL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD60PURZ : Electronics
![Seagate Exos 7E8 ST8000NM0055 - Hard drive - 8 TB - internal - 3.5-inch - SATA 6Gb/s - 7200 rpm - buffer: 256 MB | Dell USA Seagate Exos 7E8 ST8000NM0055 - Hard drive - 8 TB - internal - 3.5-inch - SATA 6Gb/s - 7200 rpm - buffer: 256 MB | Dell USA](https://snpi.dell.com/snp/images/products/large/en-us~7b51fff0-7581-4e06-a290-c509920f8931/7b51fff0-7581-4e06-a290-c509920f8931.jpg)
Seagate Exos 7E8 ST8000NM0055 - Hard drive - 8 TB - internal - 3.5-inch - SATA 6Gb/s - 7200 rpm - buffer: 256 MB | Dell USA
![WD Purple WD10PURX - Harddisk - 1 TB - intern - 3.5" - SATA 6Gb/s - buffer: 64 MB - for My Cloud EX2; EX4 WD Purple WD10PURX - Harddisk - 1 TB - intern - 3.5" - SATA 6Gb/s - buffer: 64 MB - for My Cloud EX2; EX4](https://csdam.net/digitalcontent/0/5813/5813650.jpg)