[the8472]

Though AWS instance-attached NVMe(oF?) still has less IOPS per TB than bare metal NVMe does.

    E.g. i8g.2xlarge, 1875 GB, 300k IOPS read
    vs. WD_BLACK SN8100, 2TB, 2300k IOPS read

[antonkochubey]

Don't compare customer SSDs, which quote burst IOPS, to data-center SSDs which quote sustained IOPS in their spec sheets.

E.g. Micron 7450 PRO 3.84 TB - IOPS 4K 735k lesend, 160k schreibend

[the8472]

The 7450 spec sheet[0] lists 1M iops read for the U.2 connector, 735k is for the M.2. And that's a PCIe Gen4 drive. If you look at the Micron 9550 Pro[1] (Gen5) the specsheet lists 3M IOPS for the 3.2TB model.

[0] https://assets.micron.com/adobe/assets/urn:aaid:aem:d133a40b... [1] https://www.micron.com/products/storage/ssd/data-center-ssd/...

[antonkochubey]

I have a strong suspicion that difference is due to heat dissipation of different form-factors, not due to connector. But yeah, it looks like whatever AWS is using is not on par with modern drives indeed, a factor of 10 to the drive you linked is a huge difference.

[everfrustrated]

You can't do those rates 24x7 on a WD_BLACK tho.