# What is the Bandwidth of a Chevy Suburban full of Micro-SD cards

• http://tidbitsfortechs.blogspot.com/2013/09/never-underestimate-bandwidth-of.html

A MicroSD card is .1 cubic inches, so if all things were equal you
could stuff 100 64gb cards into a cubic inch of space! But, that does
not seem realistic. Micro SD cards are oddly shaped. Plus, nothing ever stacks just
perfect and we have to put them in boxes of some sort that can support
the weight of thousands of cards. So, we're going to reduce that number
by 20% when we're done.

Given the dimensions of the MicroSD card and the size of a cubic foot, a
little math later... 174,646 MicroSD cards per cubic foot. Now trim 20%
off and you have 139716 MicroSD cards per cubic foot. Remember, we have
137 cubic feet to fill.

19,141,092 MicroSD cards will fit in a 2014 Chevy Suburban.

1,225,029,888 GigaBytes (over 1.2 billion GB's!)

(1,196,318.25 TeraBytes  Or   1168.279541016 PetaBytes)

Bandwidth. We'll use the old "New York to Los Angeles" as a benchmark. According to Google, that's a 2,790 mi, 40 hour trek. Since bandwidth is generally measured per second, we'll measure the trip that way too. A 40 hour trip is 144,000 seconds. Now lets measure the bandwidth:

1,225,029,888 GB in 144,000 seconds = 68,057 Gbps

• You must be as drunk as I...

• @El_Heffe said:

1,225,029,888 GB in 144,000 seconds as a single packet.

Imagine gaming with a ping of 144000000 and having every packet contain the entire history of anything anyone has ever done in that game to date. That's what you just described.

God, I wish I was old enough to drunk.

• @Ben L. said:

God, I wish I was old enough to drunk.
Sneak across the border to Canada when you turn 18 and you can drink to your heart's content.

• The time it'd take to write to and read from the 19,141,092 microSD cards is not negligible.

• @spamcourt said:

The time it'd take to write to and read from the 19,141,092 microSD cards is not negligible.

Well, imagine the IO throughput when using 19,141,092 microSD card readers/writers ... With, say, 2MB per second per card you get 320TBit/second ... that's something that most people would like in their RAID array.

•  This is why Amazon's cold storage cloud thingamabob has a "Truck full of disks" import/export option. It's also why we have tape libraries in the datacenter and put the tapes in Iron Mountain vans instead of Iron Mountain colocating a bunch of tape robots over remote links.

• @mott555 said:

@Circuitsoft said:

Xkcd What If: FedEx Bandwidth
inb4 Rosie.

What IS the bandwidth of a Rosie O'Donnel full of micro-SD cards barreling down the highway?

• @Lorne Kates said:

What IS the bandwidth of a Rosie O'Donnel full of micro-SD cards barreling down the highway?
I can't imagine Ms. O'Donnell barreling anywhere very fast.

• @PJH said:

@Lorne Kates said:
What IS the bandwidth of a Rosie O'Donnel full of micro-SD cards barreling down the highway?
I can't imagine Ms. O'Donnell barreling anywhere very fast.

I'll bet she'd barrel down Niagara Falls very fast.

• @flop said:

@spamcourt said:
The time it'd take to write to and read from the 19,141,092 microSD cards is not negligible.

Well, imagine the IO throughput when using 19,141,092 microSD card readers/writers ... With, say, 2MB per second per card you get 320TBit/second ... that's something that most people would like in their RAID array.

That would be awesome. Which RAID version is best for my 19.1 million microSD readers/writers?

• @Lorne Kates said:

@mott555 said:
@Circuitsoft said:
Xkcd What If: FedEx Bandwidth
inb4 Rosie.

What IS the bandwidth of a Rosie O'Donnel full of micro-SD cards barreling down the highway?

Rosie O'Donnel --- Chevy Suburban. Sounds pretty close to me.

• Also if the information stored in a human being is about 150 zetabytes link, what are the bandwidth and latency of the Kenyan relay team?

• @El_Heffe said:

@flop said:
Well, imagine the IO throughput when using 19,141,092 microSD card readers/writers ... With, say, 2MB per second per card you get 320TBit/second ... that's something that most people would like in their RAID array.
That would be awesome. Which RAID version is best for my 19.1 million microSD readers/writers?

Well, RAID 1010  would sound awfully redundant, wouldn't it? Well, as there's RAID 0 to RAID 6, how about a RAID 321,460,6357 (which is 19,141,09210) and sounds a bit like PI?

• @flop said:

@El_Heffe said:
@flop said:
Well, imagine the IO throughput when using 19,141,092 microSD card readers/writers ... With, say, 2MB per second per card you get 320TBit/second ... that's something that most people would like in their RAID array.
That would be awesome. Which RAID version is best for my 19.1 million microSD readers/writers?
Well, RAID 1010  would sound awfully redundant, wouldn't it? Well, as there's RAID 0 to RAID 6, how about a RAID 321,460,6357 (which is 19,141,09210) and sounds a bit like PI?

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