LordVile In continuous read and writes sure but IOPS will still be far lower Reply
FunSurfer Current SATA III connection maximum speed is 550–600 MB/s, usually HDD operates at 100 MB/s, so how will it reach X8 speed, 800 MB/s? Will it work with other communication type, like USB, PCIe or NVMe? Reply
MosephV FunSurfer said: Current SATA III connection maximum speed is 550–600 MB/s, usually HDD operates at 100 MB/s, so how will it reach X8 speed, 800 MB/s? Will it work with other communication type, like USB, PCIe or NVMe? My guess is SAS, which has double the bandwidth of SATA III. It's also the most common interface for spinning rust in the data center Reply
Dr Kay FunSurfer said: Current SATA III connection maximum speed is 550–600 MB/s, usually HDD operates at 100 MB/s, so how will it reach X8 speed, 800 MB/s? Will it work with other communication type, like USB, PCIe or NVMe? I was going to ask EXACTLY the same question and I think these HDD manufacturers might adopt the PCI E interface for faster speeds as you already stated that the SATA III interface max's out at around 550- 600 MB/s so if they do manage 8 x the speed of today's fastest HDD's then 8 x 600 MB/s = 4,800 MB/s which is inline of PCI E gen 4 or 5 speed's. I do apologise if I've made any mistakes in my maths or reasoning . Reply
Shiznizzle SATA transfer speeds in the lab do not translate to real world scenarios. People today tend to shove and cram their cables in bunches into the back which does interfere with signal strength. I am getting 170 to 180 with one reading head so my guess is with two we could be looking at 300MB/s which is not shabby for spinning rust. Put a few drives in an array and numbers go up further. just glad they moved away from SMR. Reply
twin_savage Shiznizzle said: I am getting 170 to 180 with one reading head so my guess is with two we could be looking at 300MB/s which is not shabby for spinning rust. Put a few drives in an array and numbers go up further. I'm getting 587MB/s out of the old first generation mach.2 drives on sequential workloads; I'd expect these new WD drives to be atleast that good. EDIT: I just realized there is a picture in the article claiming the drives can transfer at 554.1MB/s Reply
twin_savage Dr Kay said: was going to ask EXACTLY the same question and I think these HDD manufacturers might adopt the PCI E interface for faster speeds back 2021 the new NVMe 2.0 spec added in hard drives, but IIRC they only allow them to be linked at 2 lanes instead of 4. Reply
JRStern Dr Kay said: I was going to ask EXACTLY the same question and I think these HDD manufacturers might adopt the PCI E interface for faster speeds as you already stated that the SATA III interface max's out at around 550- 600 MB/s so if they do manage 8 x the speed of today's fastest HDD's then 8 x 600 MB/s = 4,800 MB/s which is inline of PCI E gen 4 or 5 speed's. I do apologise if I've made any mistakes in my maths or reasoning . Rotational delay. Sorry, meant seek delay, just that much less of it. Reply
JRStern Cool. Head per track, fixed. Aka "drum". Back to 1965! OK at about a billion times the capacity, LOL. Now wait, I thought I was kidding, but given another three seconds consideration – perhaps such a thing could actually be done? If so, OMG. Reply
Key considerations
- Investor positioning can change fast
- Volatility remains possible near catalysts
- Macro rates and liquidity can dominate flows
Reference reading
- https://www.tomshardware.com/pc-components/hdds/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/hdds/western-digital-doubles-the-performance-of-hard-drives-with-dual-actuator-high-bandwidth-with-path-to-8x-performance-increase-power-optimized-hdds-will-reduce-power-by-20-percent#main
- https://www.tomshardware.com
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