Raid/Enterprise

RAIDon HyBrid RunneR: IOmeter & WIN7 WEI

IOmeter 2008 We ran some IOmeter configurations to test several access patterns on the device. Again, we are looking to compare the differences of the different setups. The Sequential 64mb test is to measure the overall speed with large files, and the 32mb test is to test with medium file sets. As you can see the SSD Alone still shows …

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RAIDon HyBrid RunneR: Real World Testing

Real World Usage There is a bit of confusing data here. The device benchmarks, so far, show extremely great gains when compared to a HDD used alone. The acceleration over the typical HDD is quite impressive yet it still lacks behind the performance if you were to use the SSD alone. Occasioonally synthetic benchmarks can be a bit misleading. The …

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RAIDon HyBrid RunneR: OS Load Times and Final Thoughts

Operating System Load Times Once again we are going to see the performance of real world usage except this time in regards to the amount of time it takes to load the operating system (Win7) using the three different scenarios. The lower time of loading is best. The SSD Alone only slightly outperforms the SSD/HDD combo inside of the HyBrid …

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LSI 9265 MegaRAID Supplementary Review: The Beauty of CacheCade!

Today we are going to take an in-depth look at CacheCade, a new approach to storage systems that allows the perfect fusion of HDD capacity and SSD speed. With many large databases and enterprise users ‘caught in the middle’ with large HDD arrays, yet needing more performance from their existing infrastructure, CacheCade is a great option that allows the best …

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LSI 9265 MegaRAID Cachecade Supplementary Review: Nuts and Bolts

One can improve the performance of small files by up to 50X which for certain types of setups can reap HUGE results. Webservers, File Servers, and OLTP (Online Transaction Processing) will benefit tremendously. There is definitely a large group of users that would be very interested in combining the positive aspects of both solutions (HDD/SSD) into one cohesive unit.  How …

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LSI 9265 MegaRAID Cachecade Supplementary Review: MLC vs SLC

CacheCade performance is much more dependent on SSD read performance than on SSD write performance, so the performance depends upon the size of the SSDs and the total size of the data hot spots. If there simply aren’t many hot spots on the array being accelerated, you will not gain as large of a performance gain. Once again, in our …

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LSI 9265 MegaRAID Cachecade Supplementary Review: Hot-Warm-Cool-Cold

Zoned Setup- A more complex read pattern that is much more demanding of the caching algorithm. The overlapped cold-cool-warm-hot data regions IOMeter benchmark is the most stressful on the hot data caching algorithms and so results typically reach performance in the 30,000 to 45,000 IOPS range. The base array in this scenario is generating around 500 IOPS before acceleration, which …

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