SearchStorage has done a comprehensive survey of rack mount SSD vendors, and lists these SSD rack mount vendors, with this showing the fastest rack-mount SSD devices:
manufacturer model technology interface performance metrics and notes
IBM RamSan-400 RAM SSD
Fibre Channel
InfiniBand
3,000MB/s random sustained external throughput, 400,000 random IOPS
Violin Memory Violin 1010 RAM SSD
PCIe
391MB/s random sustained read or write per port (full duplex is 719MB/s), with 8 x 4Gbps FC ports aggregated throughput is approx 2,000MB/s, 320,000 IOPS
Curtis HyperXCLR R1000 RAM SSD
Fibre Channel
197MB/s sustained R/W transfer rate, 35,000 IOPS
Choosing the right SSD for Oracle
When evaluating SSD for Oracle databases you need to consider performance (throughput and response time), reliability (Mean Time Between failures) and TCO (total cost of ownership). Most SSD vendors will provide a test RAM disk array for benchmark testing so that you can choose the vendor who offers the best price/performance ratio.
Burleson Consulting does not partner with any SSD vendors and we provide independent advice in this constantly-changing market. BC was one of the earliest adopters of SSD for Oracle and we have been deploying SSD on Oracle database since 2005 and we have experienced SSD experts to help any Oracle shop evaluate whether SSD is right for your application. BC experts can also help you choose the SSD that is best for your database. Just call 800-766-1884 or e-mail.: for SSD support details.
DRAM SSD vs. Flash SSD
With all the talk about the Oracle “flash cacheâ€, it is important to note that there are two types of SSD, and only DRAM SSD is suitable for Oracle database storage. The flash type SSD suffers from serious shortcomings, namely a degradation of access speed over time. At first, Flash SSD is 5 times faster than a platter disk, but after some usage the average read time becomes far slower than a hard drive. For Oracle, only rack-mounted DRAM SSD is acceptable for good performance:
Avg. Read speed
Avg. write speed
Platter disk
10.0 ms.
7.0 ms.
DRAM SSD
0.4 ms.
0.4 ms.
Flash SSD
1.7 ms.
94.5 ms.
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