Seagate launches HDD that perform asSATA SSD and capacity of up to 18TB

it does have some advantages, mainly magnetic storage appears that it will continue to scale for a long time (beyond 100tb per drive), where as nandflash doesn't shrink well, hence the die stacking, and increasing the number of bits per cell, despite loss of performance ,data integrity and endurance.

Its possible if not likely that nand will hit a development wall before spinning rust, may already be seeing this in effect since most modern ssds use an SLC cache + dram cache to compensate for the loss of performance and endurance of tlc and qlc memory, and without a serious breakthrough it will continue to get worse if they increase the number of bits per cell , since you can only add so many layers before cost starts to increase prohibitively.

 

Not fair to compare SSD capacity that is physically 1/5th size of HDD brick. Also, it was already proven beyond any doubt that SSD reliability is much better than HDD (look at Blackblaze reliability data).

 

I didn't say anything about reliability, reliability of individual drives is different from what I said about data integrity and endurance of the technology itself as density increases.

edit: thought i would add the reason why they can't be treated the same way, is because individual drives have over provisioning and wear leveling, error correction to compensate for low write endurance/data integrity. so in this way they can be both reliable at a drive level , and the technology itself can have low endurance/data integrity, as compared to older flash technology. With the direction given, if they add more bits per cell to increase density, it will decrease data integrity and write endurance further, if they increase the number of layers, there will a point where the cost per gb goes up, die shrinks will provide some extra density but it doesn't scale as well as logic, so the increases in density will be meager.

 

depends on how full the drive is.

 

That's a use case I hadn't thought of yet. Basically if you have enough write/read speed to use the bandwidth you can use it. Though in my case, having only 1 NAS, I'm now limited by the read/write speed of the disks

It's also an el-cheapo solution that I have, I used a USB 2.5 Gbit NIC on a DS918+:
https://github.com/bb-qq/r8152

Using the CLUB 3D CAC-1420.