Comment by kristopolous
2 years ago
In my use case I'm talking about arrays of them, think 8. RAID can parallelize platter really nicely in that configuration. But on modern ram/cpu (epyc 9654s), you'll still see the disk dragging you down. NVME drags me down more.
Maybe the key is a bunch of small ones. Like 20 512GB modules... That may be brilliant. It's way cheap
Or just get some Kioxia CD8 or CD8R or similar from Samsung/ Solidigm/ Micron depending on what you need. It will be much faster than spinning rust in all situations I am quite sure. Decent SSDs have a huge latency advantage compared to even the best HDDs just out of principle. Enterprise SSDs focused on read-write workloads can sustain decent performance even under continuous 100% load. For example: https://apac.kioxia.com/en-apac/business/ssd/data-center-ssd...
For an example of an SSD review that shows a sustained write test:
https://www.tomshardware.com/reviews/samsung-980-m2-nvme-ssd... (https://cdn.mos.cms.futurecdn.net/mzdXcBUJUuxkbYfmQigqQE-970...)
In a 900 second timeframe, the 980 Pro drops down to a bit above 1GB/s, while the worst is somewhere in the tens of MB/s. So there are significant differences in SSD performance profiles which you can only find out about from reviews like this.
Similar results here:
https://www.anandtech.com/show/16504/the-samsung-ssd-980-500...
This was the kind of review I was talking about. But you should also look at the specific capacity you're after. IIRC for the 980 non pro the 1 TB is better than the smaller ones.
That sounds like you might be having quite specific needs. Some reviews have graphs showing how the drives behave in various situations, so that could help you.
However, what I've found perusing those reviews is that there's a huge price gap between this class of drives (9x0 pro, wd 8xx and the like) and "enterprise" drives which seem to have more stable performance.
Right. I'm just an unemployed guy with expensive hobbies