World's Five Biggest SANs
An anonymous reader writes "ByteandSwitch is searching the World's Biggest SANs, and has compiled a list of 5 candidate with networks supports 10+ Petabytes of active storage. Leading the list is JPMorgan Chase, which uses a mix of IBM and Sun equipment to deliver 14 Pbytes for 170k employees. Also on the list are the U.S. DoD, which uses 700 Fibre Channel switches, NASA, the San Diego Supercomputer Center (it's got 18 Pbytes of tape! storage), and Lawrence Livermore."
Kinda like saying the worlds fastestest runner that likes swiss cheese best. This isn't a list of fastest, largest, most used, etc. Just just some PR spin for SANs. Nothing wrong with that, but still.
- Adam L. Beberg - The Cosm Project - http://www.mithral.com/
Google, the WayBack Machine, to say nothing of the 1.5 million machine bot-net we've been hearing about recently.
IIRC they need a massive cache where the "sampling algorithm" throws a heap of data away. A quick google gives the following precise measure - "The LHC will generate data at a rate equivalent to every person on Earth making twenty phone calls at the same time." - but as you say it only stores a fraction of that.
Now asuming the phone calls are made over POTS, the bitrate from the sensors should be...20 * 6*10^9 * 1220bps...
And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
I know it's not a PB but here at the Census we have one 150TB array thats used for one project and not 170K employees.
... 50TB is a lot of storage to "throw away" for redundancy / formatting! Considering at this price your paying about $10k+ a TB (With staff and infrastructure costs fractured in)!
It is interesting when you get in storage of this size. I remember sitting in a meeting where we discussed a storage cabinet we were ordering. The RAW size of the cabinet was 150TB but formatted it would be 100TB
How do they do backups (especially online ones) and restores?