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| data center facebook |
Every day, countless photos, videos, and other types of
files were uploaded by the hundreds of millions of users to Facebook. Only a
fraction of them are often seen by the user. However, all this content would
need to be stored so that takes up space on the storage media social networking
server.
How can make obsolete contents can be maintained in
storage medium (so as not to be lost when searched) but not too bulky and cost?
Facebook felt the need to look for an alternative to conventional hard disks.
Last week, in the event the Open Compute Summit, the company
demonstrated a prototype system that uses cold storage Blu-ray discs to store
data up to few million petabytes or Gigabyte.
A total of 10,000 Blu-ray discs can be stored in a special
cabinet that is more than 2 meters high. Robot arms then took the discs are
arranged in a series of magazines to retrieve data from the corresponding disc.
A Blu- ray disc itself is designed separately hold data ranging
from 25 GB to each chip single layer and up to 128 GB of on chip 4 layer variant.
Excerpted from The Verge, vice president of technical
fields Facebook Jay Parikh said that, Blu-ray based systems could save up
to 80 percent of energy use and costs by up to 50 percent compared to
conventional cold storage method that relies on the hard disk .
Blu - ray is not ideal for primary storage medium for data
transfer speeds are relatively slow, but the discs are ideal for storing data
that is infrequently accessed, such as file backup of photos and videos
Facebook users.
Currently, Blu -ray data storage is already being used by
Facebook and can store large amounts of data, up to 30 petabytes. Going forward,
the company intends to use the social network of energy -efficient flash memory
for storing data, but the solution is relatively expensive compared to other alternatives?
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