Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Where's my petabyte disk drive?

bit-player.org

Post reply on HN
Print view View original

91–100 of 101 posts

Re: Where's my petabyte disk drive?

#91

Post by dalke »

jacquesm wrote: post #45
tamana wrote: post #35

Earlier quoted context omitted.

Parent said reading a drive:s current data is possible. You said that reading erased data is impossible.

You're wrong. > if you looked close you might find the edges of bits that had been written before and weren't perfectly aligned. GGP spoke about both recovering data that had been overwritten and re-assembling data from destroyed platters without the original drive mechanism.

Thanks. Yes, I should have included the "that had been written before" in my quote.

I didn't look too into the question of how to recover the contents of a hard disk with microscopy because I figured it would be possible, but expensive. Looking now, I quickly found a MS thesis at http://escholarship.org/uc/item/26g4p84b which recovered data from a disk using MFM. While the performance was poor, the author attributes that to the experimental setup.

Ahh, and http://www.dataclinic.it/magnetic-force-microscopy.htm appears to provide a commercial service to extra data from a hard disk using magnetic force microscopy.

Re: Where's my petabyte disk drive?

#92

Post by kyberias »

aninhumer wrote: post #59
kyberias wrote: post #52

Earlier quoted context omitted.

I was wondering what you're talking about but then realized that the US keyboard layout does not have the ½ symbol right there in the keyboard like we have in Europe.

There are a wide variety of keyboard layouts in use in Europe, and a quick investigation suggests few include ½. What country are you from?

I know. I'm from Finland. Look, I'm not arguing that everyone has the ½ in their keyboards. On the contrary, most people don't. It's just funny that some people might think ½ being hard to type and some people think it's easy and it's really dependent on their keyboard layouts. :)

Re: Where's my petabyte disk drive?

#93

Post by coldtea »

Chronic51 wrote: post #74
coldtea wrote: post #67

Earlier quoted context omitted.

> Yes they are here but not nearly as common as content delivered in ancient formats from over a decade ago. For example go on a wallpapers subreddit, the vast majority is still in 8-bit 1920x1080 JPEG. Video is still mostly 1080. The leading music services still deliver in 2-channel lossy formats. And this is 2016. Ever experienced YouTube buffering on an average connection? And that's for the metropolitan US -- con…

The rest of the world doesn't matter. If there is sufficient demand for 4K video and faster connection speeds, there will eventually be a product for them.

>The rest of the world doesn't matter.

Said the American. In fact, probably the US doesn't matter in this regard, as it has lower average speeds than most of Europe and SE Asia.

Re: Where's my petabyte disk drive?

#94

Post by theandrewbailey »

vegabook wrote: post #57
drostie wrote: post #7

We appear to be slashdotting the server; here's some cached copies: Just text (loads instantly): http://webcache.googleusercontent.com/search?q=cache:Jr34hZX... Images etc. loaded from the site (seems to work, albeit slowly): http://webcache.googleusercontent.com/search?q=cache:Jr34hZX...

nice old-time "slashdotting" jargo, though I doubt that Slashdot does any slashdotting anymore (sadly). "HackerNewsing" just doesn't do it, does it.

Popularity DDoS? It's practically a DDoS attack, but the traffic is mostly legit, rather than malicious.

Re: Where's my petabyte disk drive?

#95

Post by Razengan »

masterj wrote: post #83
roywiggins wrote: post #79

Earlier quoted context omitted.

Also people who shoot raw photos. They're like 35MB each, an order of magnitude bigger than jpegs. They can eat up gigabytes (though to be fair, not terabytes) pretty fast. I have about 525GB of photos and videos that I've taken over years. Something like 300GB is jpegs. If I'd exclusively shot raw files I would need 3-4TB to store everything.

And 4TB these days only costs ~$120 http://www.amazon.com/Seagate-SATA-3-5-Inch-Desktop-ST4000DM... though it's still a chore to manage and backup so many photos

> it's still a chore to manage and backup so many photos

I can't wait for a photo manager with some kind of AI that goes through the pictures I've taken myself and offers them based on "feel good vibes", "eerie", "cozy" and so on, and learning what I like as it goes.

Apple please?

Re: Where's my petabyte disk drive?

#96

Post by Razengan »

fdanconia wrote: post #82
Razengan wrote: post #55

Earlier quoted context omitted.

> lack of demand for storage and in turn, demand for storage is slowed by lack of need for storage. The real question should be: Where's my 4K video? My 10-bit-channel images? My lossless audio? Yes they are here but not nearly as common as content delivered in ancient formats from over a decade ago. For example go on a wallpapers subreddit, the vast majority is still in 8-bit 1920x1080 JPEG. Video is still mostly 10…

>and in turn, demand for storage is slowed by lack of need for storage. Are you talking about consumer storage? Because need for enterprise storage (which I sell), is only increasing. What is decreasing is the revenue/profit per TB (naturally).

> Are you talking about consumer storage?

Once content producers make more higher-quality content, and enough consumers start consuming it, then won't the content providers need the extra storage too to serve that content from?

Re: Where's my petabyte disk drive?

#97

Post by notacoward »

digi_owl wrote: post #46
evmar wrote: post #9

Massive hard drives only useful for archival purposes, under this argument: if your hard drive is being used for live queries, you want to access all the data on it. Even if you have have all the pieces in place to stream 1gig per sec off of the drive, a 1pb drive would still take 1 million seconds = ~11.5 days to read. So in practice in production it's more useful to have smaller hard drives in more places to work o…

I seem to recall reading some worries that current sizes are already pushing the limits of RAID setups. This in that it takes so much time to rebuild a drive given current interfaces that you risk one of the others in the array to fail during the process, thus making recovery impossible.

It's not just a worry. I've interacted with users at multiple sites who have actually lost data because the rebuild windows are so long that they had three effectively-simultaneous failures within a RAID-6 set.

Re: Where's my petabyte disk drive?

#98

Post by cweiss »

douche wrote: post #61
Razengan wrote: post #55

Earlier quoted context omitted.

> lack of demand for storage and in turn, demand for storage is slowed by lack of need for storage. The real question should be: Where's my 4K video? My 10-bit-channel images? My lossless audio? Yes they are here but not nearly as common as content delivered in ancient formats from over a decade ago. For example go on a wallpapers subreddit, the vast majority is still in 8-bit 1920x1080 JPEG. Video is still mostly 10…

For a lot of things, that extra resolution is not really any benefit. Particularly for content that wasn't ever recorded at that level of fidelity anyway - I don't need 4k versions of Seinfeld re-runs, or SpongeBob SquarePants for the kiddos. Most of that stuff doesn't even need to be 720p. Besides, pirated video content was really the only thing that most normal people could fill up their hard drives with (okay, may…

And yet, have you seen the 4k content out there? Breaking Bad was awesome, but is that really better in 4k than, say BSG or Planet Earth? I bought a 4k TV to use as a monitor several months back and started researching content - Most of it is eyebrow-raising, to say the least. I remember when 720/1080 were first introduced, there was an expected dearth of content, but at least what was out there was worth high-def (flyovers of tourist destinations, PBS nature documentaries, etc). For example - Here's some of Netflix's offerings in 4k:

  Series:
  House of Cards
  Marco Polo
  Breaking Bad
  The Blacklist

  Movies and Documentaries
  Smurfs 2
  Philadelphia
  Jerry Macguire
  Crouching Tiger, Hidden Dragon
  Oceans (documentary)
  Forests (documentary)
  Flowers (documentary)
Edit:formatting

Re: Where's my petabyte disk drive?

#99

Post by roywiggins »

Razengan wrote: post #95
masterj wrote: post #83

Earlier quoted context omitted.

And 4TB these days only costs ~$120 http://www.amazon.com/Seagate-SATA-3-5-Inch-Desktop-ST4000DM... though it's still a chore to manage and backup so many photos

> it's still a chore to manage and backup so many photos I can't wait for a photo manager with some kind of AI that goes through the pictures I've taken myself and offers them based on "feel good vibes", "eerie", "cozy" and so on, and learning what I like as it goes. Apple please?

Google Photos has some AI tied into it- it tries to autotag photos into categories like "selfies" and "concerts" and "Christmas" (to name a few at random) and it isn't completely perfect, but not horrible.

Not so useful for me, since I don't care to upload my entire photo collection to Google. Something like this that either works offline or can progressively tag photos and insert those tags in a format Lightroom could read would be awfully useful.

Re: Where's my petabyte disk drive?

#100

Post by guidedlight »

cweiss wrote: post #98
douche wrote: post #61

Earlier quoted context omitted.

For a lot of things, that extra resolution is not really any benefit. Particularly for content that wasn't ever recorded at that level of fidelity anyway - I don't need 4k versions of Seinfeld re-runs, or SpongeBob SquarePants for the kiddos. Most of that stuff doesn't even need to be 720p. Besides, pirated video content was really the only thing that most normal people could fill up their hard drives with (okay, may…

And yet, have you seen the 4k content out there? Breaking Bad was awesome, but is that really better in 4k than, say BSG or Planet Earth? I bought a 4k TV to use as a monitor several months back and started researching content - Most of it is eyebrow-raising, to say the least. I remember when 720/1080 were first introduced, there was an expected dearth of content, but at least what was out there was worth high-def (f…

Right. Did you know that DVD's still outsell BluRay's?
Post reply on HN