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Demartek Evaluation: Seagate Enterprise SATA SSD with DuraWrite™ Technology
August 2018
As the adoption of flash storage in data centers increases so does the pressure to address the common issue of Write Amplification (WA) which can limit I/O performance. WA, or the ratio of physical media writes to writes requested by the host, increases as free flash memory pages decrease and garbage collection becomes necessary in order to free up additional flash memory pages to perform new writes.
The key to decreasing WA is increasing the unwritten flash memory pages available. Vendors overprovision SSDs in order to increase the free flash memory pages available, thus decreasing WA.
To further increase free flash memory pages, decrease WA, and ultimately increase performance, Seagate has introduced DuraWrite technology. Seagate Enterprise SATA SSDs with DuraWrite Technology take advantage of low data entropy, compressing the data before writing to the SSD. This conserves free flash memory pages and ultimately leads to improved performance.
Seagate commissioned Demartek to evaluate Seagate Enterprise SATA SSDs with DuraWrite Technology comparing their performance and WA with competitive SSDs.
View the Demartek Evaluation: Seagate Enterprise SATA SSD with DuraWrite Technology (PDF, 909 KB) |