Seagate BarraCuda 4TB 3.5" 5900RMP SATA 3.0 Desktop Internal Hard Drive (ST4000DMA04)

This is an SMR disk (explaining the need for a large cache). Avoid this at all costs if you plan to use it for NAS or anything where you have to copy or write a large number of small files at once (such as the OS drive). Once it fills up the cache, the write speeds will absolutely tank to the 20-200 KB/s range. For comparison, an old ST2000DM001 CMR disk from 2012 still hits 1.11 MB/s in this scenario! CrystalDiskMark results for 1 GiB (x1) [Read] SEQ 1MiB (Q= 8, T= 1): 102.488 MB/s [ 97.7 IOPS] < 80942.72 us> SEQ 1MiB (Q= 1, T= 1): 103.986 MB/s [ 99.2 IOPS] < 10075.37 us> RND 4KiB (Q= 32, T= 1): 1.035 MB/s [ 252.7 IOPS] <122788.12 us> RND 4KiB (Q= 1, T= 1): 0.480 MB/s [ 117.2 IOPS] < 8512.61 us> [Write] SEQ 1MiB (Q= 8, T= 1): 78.274 MB/s [ 74.6 IOPS] <105117.98 us> SEQ 1MiB (Q= 1, T= 1): 83.965 MB/s [ 80.1 IOPS] < 12478.01 us> RND 4KiB (Q= 32, T= 1): 0.217 MB/s [ 53.0 IOPS] <544645.26 us> RND 4KiB (Q= 1, T= 1): 0.021 MB/s [ 5.1 IOPS] <176072.51 us>

It stores data as well as a 4TB 5400rpm drive can. It worked with my Dell R520, R320 servers using both the onboard SATA chip (Intel) and the Dell PERC (LSI 9200 I think). Doing the math, it's cheaper to store on 2 of these than it is to store in the cloud for a couple years. Just make to have your off-site backup handy. There isn't much else to say other than it probably does what you expect it to. Don't use it as a boot drive, use it as an archive drive. Hopefully you have 2 (at least).

I'v been using Seagate drives for a long time in business and academia (research). It is very quiet and minds it's own business. It does an extraordinary job of signaling a problem and maintaining data integrity. Although the drive is 5400 RPM's, it makes up for with the larger 256MB cache size for excellent. The 6.0 Gb/s transfer rate is very good. I would tell anyone that for the money, it beats others in it's class.