r/AskReddit 5d ago

You can have 5000 of anything that starts with Y. What do you choose?

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u/twankyfive 5d ago

Yillions of dollars. It's a really big number you don't know because it goes to a different school.

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u/[deleted] 5d ago

[deleted]

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u/IncoherentPenguin 5d ago

That’s actually smart can you imagine getting 5000 yotta size drives, you’ve just made S3 obsolete, you can comfortably fit all of YouTube on one drive. You could power the world’s storage needs for the next 50 years.

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u/bluninja1234 5d ago

mfw its a 1km diameter tape drive:

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u/bargu 5d ago

Seek times measured in days.

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u/coolestostrich 4d ago

So S3 glacier?

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u/quantumhovercraft 5d ago

That wouldn't be even remotely big enough.

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u/Fleming1924 4d ago

If anyone's curious I did some very rough maths based on quick googling (5.6μm thick, 960m long tape being 30Tb) that you'd get around 40.82Zb of storage for a 1km diameter tape. (≈0.04Yb)

A Yb would need to be around 5km diameter, unless there's a higher density storage available, I didn't look that deep into it.

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u/bluninja1234 4d ago

wow that's really cool to know, thanks

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u/IncoherentPenguin 4d ago edited 4d ago

To calculate the size of a tape drive needed to back up one yottabyte (YB) of data, let’s first clarify what a yottabyte is. A yottabyte is equal to 1024 bytes, or 1,000,000,000,000,000,000,000,000 bytes.

Modern high-capacity tape drives, such as the LTO (Linear Tape-Open) series, have a capacity of around 18 terabytes (TB) of uncompressed data per cartridge, and they can reach up to 45 terabytes with compression. For simplicity, let’s use the uncompressed capacity of 18 TB per cartridge for our calculations.

1 yottabyte = 1,000,000,000,000,000,000,000,000 bytes 1 terabyte = 1,000,000,000,000 bytes

Therefore, the number of terabytes in a yottabyte is: 1 YB = 1,000,000,000,000,000,000,000,000 bytes / 1,000,000,000,000 bytes per TB = 1,000,000,000,000 TB

Next, we calculate the number of tape cartridges needed: Number of cartridges = 1,000,000,000,000 TB / 18 TB = 55,555,556 cartridges

To give a sense of physical size, an LTO tape cartridge is approximately 102 mm x 105 mm x 21 mm in dimensions. If we consider just the storage space without any additional hardware or space for accessibility, we can make a rough estimate of the volume required.

Volume of one cartridge = 102 mm x 105 mm x 21 mm = 224,910 mm³ = 0.00022491 m³

Total volume for all cartridges: 55,555,556 cartridges * 0.00022491 m3 = approx 12,500 m3

This is a very rough estimate and doesn’t include space for the drives themselves, any necessary infrastructure, or cooling systems. To put it in perspective, 12,500 cubic meters is about the volume of five Olympic-size swimming pools.

So, a tape drive system to back up one yottabyte of data would require a massive number of tapes, occupying a significant amount of physical space.

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u/EvasiveCookies 5d ago

Or 1 call of duty game

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u/onefst250r 4d ago

Problem likely becomes read/write performance and long term reliability.

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u/tekanet 4d ago

You’re thinking of Yottabytes.

The prefixes above apply to different stuff, not only to bytes. In the metric system we use them for grams, meters, liters and so on.

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u/Zer0-Sum-Game 4d ago

Until you attempt to turn it on and realize you need several mid sized country's worth of power and a massive cooling facility...

Though the political power of being the OWNER of that facility could possibly swing it into possibility.

Shit, what's the processing power on this shit? If it just gives me a bigger box of the same modern tech, then the extra travel time of the electronics being huge would actually DECREASE processing speed compared to a smaller drive system...

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u/Necessary-Knowledge4 4d ago

Imagine having that amount physically in Yottas, though. I'm assuming you'd flood the world in SSDs.

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u/IncoherentPenguin 3d ago

Well actually it wouldn’t too bad, given 20 TB drives, you would need 50 million drives to make one yottabyte, therefore for 5000 yottabytes, you would need 250 billion drives. Each 20 TB drive costs about $380, one yottabyte would cost 19 billion dollars. Or for all 5000 yottabytes, $95 trillion although if you are going to buy 250 billion disk drives I imagine they might give you a bit of a discount.

If you were to put each drive end to end. You would be able to create a road 36.7 million km which is a ridiculous amount of road to construct so let’s say you were in a space ship, it would take two light minutes to travel that distance.

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u/Necessary-Knowledge4 3d ago

Sorry i meant that amount of drives total - it had nothing to do with how big data size wise they were. Like 10 yottas of SSDs were just created and dumped onto the world.

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u/Bean_cult 3d ago

worth about one picture of your mother