![I have 4x 8TB Reds (WD80efzx) that were in an older Synology and just bought a new DS1821+...have had zero problems with them...what drives would you recommend to add to them in I have 4x 8TB Reds (WD80efzx) that were in an older Synology and just bought a new DS1821+...have had zero problems with them...what drives would you recommend to add to them in](https://styles.redditmedia.com/t5_2s4co/styles/communityIcon_idj7sxg6xl2b1.png)
I have 4x 8TB Reds (WD80efzx) that were in an older Synology and just bought a new DS1821+...have had zero problems with them...what drives would you recommend to add to them in
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![Amazon.com: Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFBX : Electronics Amazon.com: Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFBX : Electronics](https://m.media-amazon.com/images/I/611GveQU4+L.jpg)
Amazon.com: Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFBX : Electronics
![Amazon.com: Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFBX : Electronics Amazon.com: Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFBX : Electronics](https://m.media-amazon.com/images/I/81xqEyKTtfL._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFBX : Electronics
![Very SLOW SHR Volume Speed - General Post-Installation Questions/Discussions (non-hardware specific) - XPEnology Community Very SLOW SHR Volume Speed - General Post-Installation Questions/Discussions (non-hardware specific) - XPEnology Community](https://xpenology.com/forum/uploads/monthly_2020_08/1953170102_Annotation2020-08-23033708.png.f8dd112ebe12308029ad47027f644503.png)