3 ms·

I think the difference is that a hard drive can read sequential pages far quicker, and at far less energy per byte, whereas as far as I can see this tech cannot

I think the difference is that a hard drive can read sequential pages far quicker, and at far less energy per byte, whereas as far as I can see this tech cannot. Random and sequential reads would work out the same energy per byte.

magicalhippo 2y ago
Right, to put some numbers to that the same HC570 can do peak 291MB/s which divided by 4KB pages means 74496 sequential IOPS. Hence why we love SSDs. However to their defense, they seem to be quite focused on this being for cloud vendors. And, as has been demonstrated[1], a sufficiently large number of sequential IOs effectively looks like random IOs to the the server. That being said, surely this is more for cold data, so I'd imagine the cloud vendors can optimize access to benefit from the high sequential IO bandwidth of HDDs. [1]: https://youtu.be/yHgSU6iqrlE?t=2578 https://youtu.be/yHgSU6iqrlE?t=2578