WHAT IS BIG DATA?

Gadgets and Gizmos (India) - - KNOWTECH - Text by : NANDAGOPAL RA­JAN Graphic by : AMIT SHARMA

Big data is hard to de­fine. Usu­ally it is as­so­ci­ated with in­stances where you have tremen­dous ve­loc­ity, vol­ume and va­ri­ety of data. Ve­loc­ity would mean you are be­ing streamed with data that has to be in­gested and pro­cessed fast. When you are be­ing streamed with data at that rate, you are likely to run into a stor­age prob­lem sooner rather than later. Then this kind of data is not com­ing from one source and the sheer va­ri­ety makes it hard to man­age.

BYTE: 8 BITS

1 byte: A sin­gle char­ac­ter

KILO­BYTE (1000 BYTES)

1 Kilo­byte: A very short story

MEGABYTE (1 000 000 BYTES)

1 Megabyte: A small novel OR A 3.5 inch floppy disk

GI­GA­BYTE ( 1 000 000 000 BYTES)

1 Gi­ga­byte: A pickup truck filled with pa­per OR a sym­phony in high- fi­delity sound OR a movie at TV qual­ity

TER­ABYTE ( 1 000 000 000 000 BYTES)

1 Ter­abyte: An au­to­mated tape ro­bot OR all the X- ray films in a large tech­no­log­i­cal hos­pi­tal OR 50,000 trees

made into pa­per and printed OR daily rate of EOS data ( 1998)

PETABYTE (1 000 000 000 000 000 BYTES)

1 Petabyte: 5 years of EOS data (at 46 mbps)

EX­ABYTE (1 000 000 000 000 000 000 BYTES)

5 Ex­abytes: All words ever spo­ken by hu­man be­ings

ZETTABYTE ( 1 000 000 000 000 000 000 000 BYTES)

1024 Ex­abytes

YOTTABYTE ( 1 000 000 000 000 000 000 000 000 BYTES)

XENOTTABYTE (1 000 000 000 000 000 000 000 000 000 BYTES)

SHILENTNOBYTE (1 000 000 000 000 000 000 000 000 000 000 BYTES)

DOMEGEMEGROTTEBYTE (1 000 000 000 000 000 000 000 000 000 000 000 BYTES)

40 ZETABYTES Stored in­for­ma­tion by 2020. If one byte is a hu­man cell, then 40 zetabytes will mean a pop­u­la­tion of 400 mil­lion peo­ple.

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