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Memory Technology
Posted in Mar 21, 2008 by Tasos Zervos - Edit - History

From Three minutes with Google's Eric Schmidt :
" At Google, for example, we found it costs less money and it is more efficient to use DRAM as storage as opposed to hard disks - - which is kind of amazing. It turns out that DRAM is 200,000 times more efficient when it comes to storing seekable data. In a disk architecture, you have to wait for a disk arm to retrieve information off of a hard-disk platter. DRAM is not only cheaper, but queries are lightning fast. "
http://archives.cnn.com/2002/TECH/internet/02/01/interview.eric.schmidt.idg/index.html



From Java 2 Platform, Standard Edition v 1.4 Datasheet :
" 64-bit support provides Java technology developers with near limitless amounts of Memory for high-performance, high-scalability computing. While previous J2SE releases were limited to addressing 4 gigabytes of RAM, version 1.4 allows Java applications to access hundreds of gigabytes of RAM. This enables developers to drive more applications and very large datasets into Memory, and avoids the performance overhead of reading data in from a disk or from a database. "
http://java.sun.com/j2se/1.4.2/datasheet.1_4.html



From MetaRAM Bets On High Capacity Memory Breakthrough by Andy Patrizio (February 25, 2008):
" MetaRAM, founded by Fred Weber, a former chief technology officer at AMD, is going public today with its MetaSDRAM. The technology doubles the Memory on a Memory stick by using cheaper Memory components. "
" The MetaSDRAM chipset is a controller that sits between the chips on a DRAM stick that enables up to four times more mainstream DRAMs to be integrated into existing DIMM stick without the need for any hardware or software changes. As a result, 8GB and 16GB DRAM sticks are possible for a fraction of their normal price. "
" Weber estimates that by 2010, 2GBit DRAMs will be available in mass quantities just as 1GBit DRAMs are available now. At that point, MetaRAM can produce 16 and 32GB Memory controllers for roughly the price of the 8GB and 16GB products it will produce now. "
http://www.internetnews.com/hardware/article.php/3729911/MetaRAM+Bets+On+High+Capacity+Memory+Breakthrough.htm




Pricewatch - System Memory
http://www.pricewatch.com/system_memory /


Non-direct RAM

Such solutions will allow for very fast virtual memory access.

From Gear6 satiates hungry apps with 500GB RAM monster by Ashlee Vance (August 28, 2007):
" At 250,000 IOPS, Gear6 boasts that it can beat out a high-end NAS (network attached storage) system from, say, NetApp by 5X. The company also says that its half a millisecond latency easily beats out the typical 2 to 8 milliseconds of latency experienced by customers with demanding, clustered software. All told, Gear6 promises a 10X to 30X performance improvement for applications with large data sets. "
" You all knew that someone would pump out MAS (memory attached storage) boxes sooner or later. There's just too many tempting uses for such a system - like slapping a database in memory - to ignore the concept. And it seems very likely that Gear6 will face some direct competition soon enough. "
http://www.theregister.co.uk/2007/12/10/amd_violin_memory/print.html





From Violin plays AMD for memory monster by Ashlee Vance (December 10, 2007):
" The company sells a Violin 1010 unit that holds up to 504GB of DRAM in a 2U box . Fill a rack, and you're looking at 10TB of DRAM. "
" An AMD Opteron processor-based server connected to a HyperTransport technology-enabled Violin Memory Appliance will have both directly connected memory and Extended Memory resources. Directly connected memory can be selected for bandwidth and latency while the Extended Memory can be much larger and located in the Memory Appliance. Applications such as large databases will benefit from the large-scale memory footprints enabled through Extended Memory. "
http://www.theregister.co.uk/2007/12/10/amd_violin_memory/print.html
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