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SanDisk ULLtraDIMM DDR3 400GB SSD Enterprise Review

By: Paul Alcorn | SSDs in IT/Datacenter | Posted: Nov 10, 2014 2:05 pm
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TweakTown Rating: 97%Manufacturer: SanDisk

128k Sequential Read/Write

 

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128k sequential speed reflects the maximum sequential throughput of the SSD, and is indicative of performance in OLAP, batch processing, streaming, content delivery applications, and backup scenarios.

 

Our multi-threaded sequential testing is very demanding; two ULLtraDIMMs with 100% utilization provide 1,323 MB /s, and at 70% utilization, they deliver 1,307 MB /s. A single ULLtraDIMM with 100% utilization delivers 698 MB/s, and with 70% utilization, it averages 691 MB/s.

 

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A single 12Gb/s SSD800MH nearly reaches the sequential speed of two ULLtraDIMMs, which also provide excellent latency and performance.

 

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Sequential write performance is important in tasks such as caching, replication, HPC, content delivery applications, and database logging. Two ULLtraDIMMs in RAID with 70% and 100% utilization average 828 MB/s. A single ULLtraDIMM averages 407 MB/s with both usage scenarios.

 

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The dual ULLtraDIMMs take the win in this test. The ULLtraDIMMs clearly benefit from the enhanced parallelism when deployed in RAID, and don't require associated HBA/RAID controllers and cabling.

 

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In mixed sequential workloads, the ULLtraDIMMs scale particularly well, and the benefits of extra overprovisioning provide a clear performance benefit.

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