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Bits, Bytes, Gigs and Megs; wossitallabout?
Here's the lowdown: (sources credited below)
one bit
a binary 1 or 0.
Literally, either positive or negative.
The smallest unit of storage.
1B (Byte)
1 ASCII character
a single letter, number, punctuation mark, etc.
made from 8 bits, see asciitable.com to find out more.
1KB (Kilobyte)
1000 bytes or 1000 characters
roughly a 200 word essay (assuming a 5 char/word average) probably less than this in fact, due to spaces and punctuation.
the old 5.25 inch floppies held 512k
1MB (Megabyte)
1,000,000 (million) bytes
the Bible is about 4.5 meg, in raw text form
1.44 Megabytes is a floppy disk
30 seconds of mp3 is about a meg (depends heavily on bitrate and other factors)
1GB (Gigabyte)
1,000,000,000 (billion) bytes
a CD is 3/4 of a Gb (or sometimes 4/5, at 800Mb)
Around 260 mp3's of varied qualities and lengths will total a gig
My first PC in 1996ish had a 0.9Gb Harddrive. (FYI, it cost £1500, and had a 75Mhz processor, 8Mb of RAM, later upgraded to 24.)
My combined harddrive space today is 180Gb, and that's fairly big by today's standards.
1TB (Terabyte)
1,000,000,000,000 (trillion) bytes
a small research library 1
while it -is- possible to have a Tb of storage by using, say, four 250Gb drives, AFAIK it's not yet possible to buy a single harddrive holding 1Tb, but we should be seeing harddrives this size in about 2006.
1PB (Petabyte)
1,000,000,000,000,000 (thousand trillion) bytes
1/2 of all U.S. research libraries 1
one thousand terabytes.
Or around 3500 of the highest spec harddrives availiable today.
If my maths is correct (which it very likely isn't), Moore's law would have us beleive that we won't see this kind of power until around the year 2500. However, I'd predict that with nanotech and possibly some other technologies, we could be seeing these kind of numbers being talked about a lot sooner that that.
1EB (Exabyte)
1,000,000,000,000,000,000 (million trillion) bytes
5x all printed material, (ever)1
uh.. whoa.
1ZB (Zettabyte)
1,000,000,000,000,000,000,000 (billion trillion) bytes
all the grains of sand (maybe?)1
ah. whoa.
1YB (Yottabyte)
1,000,000,000,000,000,000,000,000 (trillion trillion) bytes
number of AOL CDs produced since 1997
(that's a joke, by the way)
I mean, honestly, at today's prices (250Gb~£70), 1Yb of harddrive storage would cost £280,000,000,000,000. (280 TRILLION pounds).
I couldn't even get that kind of money by helping those poor politicians in Nigeria.
1: compiled and modified from: infortrend.com
And an interesting fact from whitman.edu:
Q: How long would it take someone to download a one- yottabyte file using a 28.8 baud modem?
A: 11 trillion years.
w00t.
User Comments:Who: ferret
When: November 13th, 2004
Says: my only question is, what would an ordinary person need 1 terrabyte of hard drive space for? unless we create 1 billion megapixel digital cameras with such high resolution that it blows our minds out the backs of our heads...
Who: Strideo
When: November 19th, 2004
Says: My 1 billion megapixel digital camera has higher resolution than real life! No wait! Thats impossible!
Who: u24
When: November 20th, 2004
Says: well, given that an average DVD, when compressed to DivX format, takes up about a gig (search google for "gordian knot") I can see how someone who wanted to backup all their DVDs and CDs might just about need a terrabyte. personally, 180Gb is fine for me.
Who: Nothing
When: December 4th, 2004
Says: 1.6TB In a Shoebox
http://slashdot.org/article.pl?sid=04/12/01/1354223&tid=198&tid=137&tid=1
Who: u24
When: December 17th, 2004
Says: well, that's me proven wrong! ;-0
Who: Naz
When: February 8th, 2005
Says: Dumb question, I thought that when using the 'Byte' mesurements to numbers for Kilo, Mega and such were 1024. 1KB = 1024B, 1MB = 1024KB = 1048576B . Where did I get this idea? =)
Who: u24
When: February 9th, 2005
Says: actually, that is kind of correct. people use both 1000 and 1024, but 1024 is more technically correct.
Who: junkmail
When: March 1st, 2005
Says: 20 years ago, the common thought was "who could EVER fill up an 80 MB hard drive?" 40 MB was plenty of space for the average computer. It just proves my closet theory, "junk expands to fill the space allotted."
Who:
When: March 7th, 2005
Says: "640Kb (ram) should be enough for anyone", I think people remember this one ;).
We use more and more space, I'm sure that by 2015 we'll all be having 1TB HD's.
---
from u24: probably sooner than that :-)
Who: Zleep-Dogg
When: April 7th, 2005
Says: Actually someone invented a new unit to clear up the mess ;)
instead of calling eg. 1024 byte 1 kilobyte, it can be called 1 kibibyte (http://en.wikipedia.org/wiki/Kibibyte)
So I guess you can add the following to the list:
kibibyte
Mebibyte
gibibyte
tebibyte
pebibyte
exbibyte
zebibyte
(and yobibyte I guess the last one must be, though it's not on Wiki...)
and of course the same prefixes are available for bits (eg. kibibit, mebibit and so forth)
--
from u24:
hehe.. v. cool, thanks for sharing :-)
Who: Brian
When: January 20th, 2006
Says: Anyone have a Yottabyte HD available for sale?
I'm interested! For those wondering what I would do with it...
Leave it MT for as long as I can :D
-Brian
Who:
When: January 23rd, 2006
Says: i have a cd that says 700mb rewriteable
how many song on average could i get on this
Who: u24
When: February 3rd, 2006
Says: depends on the size and format of the songs.
an mp3 on average is around 6Mb, so that'd be ~120 mp3s. wma takes less space, but it's a MS format, so we stay away from that. :-)
if you're encoding the audio to play on a standard CD player, you'll fit around 14 songs on there, as they have to be uncompressed.
Who:
When: April 25th, 2006
Says: Is it a mebibyte or a maybebyte?
Who: Fafhrd
When: May 8th, 2006
Says: I got a TB removable HardDrive... it only cost 1890.00 US Dollars :)
Who:
When: May 26th, 2006
Says: now 1TB is minimum for mailbox ;) - russians use ulime boxes ;)
see it @mailnation.net (for us is free) ;) & @pochtanavsegda.ru (only ru) 8-)
Who:
When: May 26th, 2006
Says: Who makes these 28.8 baud modems?!
Who:
When: June 5th, 2006
Says: Who invented all of this bit byte etc ???????? pls help urgent
---
from u24:
i actually have no idea. let me know if you find out..
Who:
When: July 18th, 2006
Says: I have 3 hard drives totaling around 850GB of space and about 20GB left.
Most of it is uncompressed film footage. I hope to be getting a 1TB server soon though so i can dump all of the uncompressed stuff onto that.
One of my 8 minute films exported uncompressed came in at around 4GB.
Also the camera i have can film in HD however i havent tried it yet, considering 8 minutes of widescreen came out at 4GB im terrified as to what 8 min at HD will be...
So there is an answer to the two year old queston of what one person would need a 1TB hard drive for. :D
~Sin
---
from u24:
that\'s a rather large storage requirement! I hope you have a backup strategy, and if not, may I suggest RAID as DVD probably won\'t be big enough to store your files...
Who: JB
When: December 14th, 2006
Says: Check out Costco.ca for a 1 TB extrenal hard drive for $829.99 in Decelber, 2006. It would be interesting to look at this blog 1 year from now.
Who: jjackpot455
When: January 7th, 2007
Says: And that's why I like AOL. ask a simple question and get a simple answer. this answered a long standing question.
kiss=keep it simple stupid.
---
from u24:
AOL?
Who: viron
When: March 14th, 2007
Says: Reading posts from just four years ago, I thought it would be kind of amusing to post the following link:
http://www.engadget.com/2007/01/05/hitachi-breaks-1tb-hard-drive-barrier-with-7k1000/
Hitiaci will present the first 3.5" (SATA II/PATA 133) 1TB HDD sometime later this year (2007).
I'll be waiting for the 750TB HDDs =)
Who:
When: June 17th, 2007
Says: If only my dog could byte That fast! ;D
Seriously, great website ya have here.
Kudos to you folks! :D
---
from u24:
heh heh. thanks :)
Who: Richard
When: July 22nd, 2007
Says: http://en.wikipedia.org/wiki/Gigabyte
look at the grath he's got it all right so there and in a bout three week i will have 10TB of hdds 10x1tb hdds
Who: Clleavage
When: December 29th, 2007
Says: Woh this thing has quite some historical material... we can now get 1Tb for like $200 man the world is spinning so fast i can barely believe it...
Who: jerweil
When: December 30th, 2007
Says: lol my bro has a stand, and he uses his petabyte for data storage... it is built for mainly data storage
Who: One Person
When: January 18th, 2008
Says: Apple now has a 1TB Hard drive in there new external hard drive for the Mac for backing up your storage and such. its called the time capsule.
Who:
When: January 22nd, 2008
Says: i have a 2tb hard drive and 1 tb is full..
Who: the wee man
When: March 7th, 2008
Says: go on apples website there offering 32 gig of ram & 4 tb of storage. but it costs over 15k
Who: Anko
When: July 5th, 2008
Says: I have a 1 TB WD GreenPower and I'm planning to buy another one in the future given that 2TB's are still not available. To answer the historical question of what to do with a TB, I use it to store Anime's and movies, all of them i get at a high quality as possible. With the advent of HD, one blueray movie is around 30GB, so go figure, if i'll be stocking a 50 episode HD quality anime that's around, say, 20Gb per episode, i'll be needing 1TB just to hold one anime season.
Who: §0=-`Monohype1o1`-=0§
When: August 17th, 2008
Says: "While not exactly a technological marvel in itself, IO Data Device's new 'HDZ-UE1.6TS' exemplifies the recent trend towards demand for higher storage capacities -- it's an external hard drive setup offering a total capacity of 1.6TB. Not much larger than four 3.5" hard drives, the HDZ-UE1.6TS goes to show that any (rich) consumer can now easily have a boatload of storage space. Here's the Japanese press release."
(At current conversion rates, this would cost nearly $2,900.)
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