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Churchill said “it is difficult to make predictions, especially about the future”.

I will not try to do so. In this blog I just mention two approaches to solve the I/O bottleneck using Solid-State Memory in different flavors.


The Advantage of these approaches is that only the storage layer is changed and everything else – especially the applications – remains unchanged thus boosting performance of your oldest legacy code without modifications.



Kaminario offers a DRAM storage appliance called K2 which replaces the traditional disk storage “in one day”. K2 keeps all your data in main memory. Data is mirrored onto hard disk for recovery. Kaminario claims up to 1.5 million IOPS for the K2, which proposes the K2 as a storage for IO intensive applications.


Of course there are also offerings that replace the hard disks with fast SSD discs as n you MacBook Air.

Teradata recently announced the Extreme Performance Appliance 4600.


Schooner Information Technology offer an MySQL appliance which uses SSDs instead of hard disks.


FUSiON-IO offers a set of ioDrive SSD solutions.


Violin Memory offers the 3200 Memory Array


Texas Memory Systems offers several RamSan solutions.

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  1. Ethan Jewett

    Nice list – many vendors I had not heard of! I wonder if you would include SAP’s own LiveCache product in this category or not? It does essentially the same thing (running an entire DB in RAM) but what I am not sure about is the persistence guarantees that LiveCache can provide. Data is mirrored to disk, but I don’t know if it is an occasional snapshot or if you can get true transactional persistence.


    1. Lars Breddemann
      LiveCache guarantees full and true transactional persistence!

      Changes to the data are logged to the LOG Area and this is saved to disk with every commit and rollback.

      It’s pretty much MaxDB with OO-specific in-process add-ons.


    2. Martin Lauer Post author

      let me add two references for data grids:

      The Gemstone site is definitely worth a longer visit. I got trapped by their article “THE HARDEST PROBLEM IN DATA MANAGEMENT” and the reference to another article called “The Five-Minute Rule 20 Years Later (and How Flash Memory Changes the Rules)”

      kr, martin


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