Sunday, August 26, 2012

For one cent a month, Amazon Glacier stores your data for centuries

For one cent a month, Amazon Glacier stores your data for centuries:





Amazon's latest storage service is called Glacier, because it's slow and designed to last for centuries.





Amazon Web Services has always been about delivering IT on demand. Spin up a virtual server, or a few thousand, anytime you'd like. Store and access as much data as you need to your heart's content.
But even in a Web-driven world, there is need for services that don't offer instant results, but will be around for eternity (or as close as possible). So today, Amazon introduced Glacier, a data archival service that will store data for one penny per gigabyte per month. As befits its name, Glacier is designed to last for a long time, but is slow: accessing data will take three to five hours. Amazon hasn't detailed exactly what technology is storing the data, but massive tape libraries are a good bet given the lengthy retrieval windows. A ZDNet article interprets one Amazon statement to mean that the company is actually using "a multitude of high-capacity, low-cost discs," but this has not been confirmed. An Amazon statement sent to Ars says only that "Glacier is built from inexpensive commodity hardware components," and is "designed to be hardware-agnostic, so that savings can be captured as Amazon continues to drive down infrastructure costs."
We also don't know exactly how Amazon measures the reliability of its storage, but the company is promising 11 nines of annual durability (99.999999999 percent) for each item, with data stored "in multiple facilities and on multiple devices within each facility."
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