Live data from Hacker News

200TB SSDs could come soon thanks to Micron's new chip

techradar.com

61–70 of 80 posts

Re: 200TB SSDs could come soon thanks to Micron's new chip

#61
post #44

Earlier quoted context omitted.

> If one SSD has a failure rate of 5%, 4 SSDs will have a failure rate of 18.6% That doesn't make sense, the probability that all 4 SSDs will simultaneously fail at any given moment, assuming a uniform distribution, is p(0.05)^4.

You don't need all 4 to fail, you need one, assuming no redundancy, but then you are sacrificing space, thus requiring you to buy even more drives.

If only one drive fails why would you lose all your data?

Re: 200TB SSDs could come soon thanks to Micron's new chip

#62
post #40

Earlier quoted context omitted.

Silly question - what makes you dislike buying four 4tb SSDs compared to buying one 16tb SSD? I could see it being less portable to have multiple drives, but I would presume that 16 TB isn’t really something that needs to be brought around portably unless you’re going somewhere for extended period of time without internet (preventing the use of a NAS/cloud storage). Multiple SSDs also allows the use of RAID for incre…

if you are moving that data around, nas/cloud storage can be super frustrating. copying 16tb of data over usb3/c is much faster than 100mbps or 200mbps internet.

That’s definitely valid for cloud on the public internet, but how fast can you pull local data on LAN?

Re: 200TB SSDs could come soon thanks to Micron's new chip

#63
post #60
post #21

Earlier quoted context omitted.

Largest size is only 2 TB, and they aren’t cheaper than e.g. Samsung QVO, as far as I can see.

The Intel 660p is a higher-tier product than Samsung QVO drives. Both use QLC, but the Intel drives are NVMe and thus have much higher peak performance (when operating out of the SLC cache). But Intel wasn't interested in pursuing the niche of users who wanted more than 2TB in a consumer drive.

Yes, but the topic was about QVO drives still being too expensive in terms of $/TB. The Intel drives don’t really help in that respect.

Re: 200TB SSDs could come soon thanks to Micron's new chip

#64
post #36

Earlier quoted context omitted.

Magic (at least as far as I'm concerned). I would love to see an updated version of this video: https://www.youtube.com/watch?v=NGFhc8R_uO4

I have basic understanding of a generic process. I mean specifically 200+ layers. Do they “just” deposit layer after layer after layer, 200-something times?

They deposit half the layers, etch holes through them and form vertical strings of memory cells, then repeat all that to build a second deck of layers on top. The interface between decks is a potential source of problems, but is more manageable than trying to drastically increase the aspect ratio of the holes that need to be etched through the stack.

Etching through lots of layers at once is why 3D NAND flash memory is actually economical, compared to basically every other kind 3D chips where layers have to be built one at a time.

Re: 200TB SSDs could come soon thanks to Micron's new chip

#65

200Tb is an impressive mark for a "future" product, but I was more impressed by the 100Tb offered "today": https://nimbusdata.com/products/exadrive/pricing/

This is impressive. Why isn't this company better known? As if they decided to stay under the radar given the design of their website.

There aren't a lot of use cases for putting that much flash storage behind the bottleneck of a single SAS or SATA port. Most of the time when you're paying tens of thousands for flash, it's worth paying for enough IO bandwidth to actually be able to use all the performance that mountain of flash can offer.

Re: 200TB SSDs could come soon thanks to Micron's new chip

#66
post #39
post #6

I will say, SSD pricing is pretty frustrating. There's a lot of focus on faster and faster nvme that's barely noticeable while actual capacity has really stagnated at around 2-4tb. As someone who is very into photography, it takes not very long to fill 2tb of space. If I could buy a cheap 16tb ssd with fast reads and slow writes I'd be a happy camper but it doesn't exist unless I want to buy spinning disks (I don't)

Why you need SSD for photography? An HD seems a better solution to be honest, isn't? Opening a single picture is a sequential operation, as well as dumping pictures from camera to disk. Am I missing something obvious?

Raw photos are 30-100MB in size. Going through your shots on an HDD is excruciatingly slow.

Re: 200TB SSDs could come soon thanks to Micron's new chip

#67

Earlier quoted context omitted.

You don't need all 4 to fail, you need one, assuming no redundancy, but then you are sacrificing space, thus requiring you to buy even more drives.

If only one drive fails why would you lose all your data?

We're trying to avoid losing any data here.

So we desperately need a parity drive, which will bring the odds of data loss down to 2.3% for 4+1. (Though there are other factors that significantly complicate these odds.)

Re: 200TB SSDs could come soon thanks to Micron's new chip

#68

Earlier quoted context omitted.

You don't need all 4 to fail, you need one, assuming no redundancy, but then you are sacrificing space, thus requiring you to buy even more drives.

If only one drive fails why would you lose all your data?

The point is to not lose any data. In the example, if you need 4 drives to store 16 TB of data instead of 1, your probability of data loss is 18.6% vs 5%.

Re: 200TB SSDs could come soon thanks to Micron's new chip

#69
post #6

I will say, SSD pricing is pretty frustrating. There's a lot of focus on faster and faster nvme that's barely noticeable while actual capacity has really stagnated at around 2-4tb. As someone who is very into photography, it takes not very long to fill 2tb of space. If I could buy a cheap 16tb ssd with fast reads and slow writes I'd be a happy camper but it doesn't exist unless I want to buy spinning disks (I don't)

Most technology seems to chase weird benchmark numbers as it seems the market decides as such. It was mhz to ghz through 2010, then it was cores, then these SSD numbers, or the refresh rates.

Most of it seems absurd to the majority of users, even if you could subtract the placebo effect.

Re: 200TB SSDs could come soon thanks to Micron's new chip

#70
post #9
post #6

I will say, SSD pricing is pretty frustrating. There's a lot of focus on faster and faster nvme that's barely noticeable while actual capacity has really stagnated at around 2-4tb. As someone who is very into photography, it takes not very long to fill 2tb of space. If I could buy a cheap 16tb ssd with fast reads and slow writes I'd be a happy camper but it doesn't exist unless I want to buy spinning disks (I don't)

Yeah, I'd gladly take a cheap large capacity SSD that can only do 500MB/s for storing data. It's still gonna be much faster, quieter and cooler than a HDD. Looking at the prices, they have barely gone down at all in the last 3 years (for the same specs). And the best price per capacity is still at 1TB.

The prices kinda look like they are going down a tiny bit, and thats because companies keep introducing ssd’s without dram cache. One those are halfway full their writes are maybe 3/4 fast as a hdd and they might last for 2-3 years
Post reply on HN