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Interest in solid-state storage has grown rapidly; however, the biggest issue holding back solid-state storage in general purpose servers today is that enterprise class drives cost at least 10 times as much as conventional hard drives from a price-per-GB perspective. Capitalizing on the performance advantages of solid state drives (SSDs) as well as the cost and capacity advantage of SATA and SAS drives, CacheCade software is designed to allow a server's existing drive volume to utilize SSD technology as a secondary tier of cache to maximize random read performance.
SAS drives can sustain only a few hundred IOPS while SATA drives reach even less. SSD devices, on the other hand, are capable of delivering IOs per second in the tens of thousands. CacheCade software allows for frequently- read data (hot-spot) to be moved to second tier SSD cache for much faster retrieval of that data when it is time for it to be re-read. This provides significant performance improvement of 2x to 50x for read-intensive applications such as web, file, SQL, and other transactional server applications.