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A Principled Technologies test report 4

Database performance and resiliency in the Intel processor-powered

Dell PowerEdge R630 running Microsoft SQL Server 2014

times as many OPM, with each database providing many more OPM than the original

HDD-configuration databases provided.

Figure 3: SQL Server 2014 performance for the 20-ms think HDD server configuration and four 20-ms think

time SSD configurations.

We found that by using multiple SQL Server instances when using more

databases at the eight-database and 24-database configurations, we were able to

achieve higher OPM.

When we looked at the variability with SSDs, we found it to be significantly

lower than with HDDs—under 5 percent with all database counts. Having a balanced

service level shows that the database server had sufficient performance capacity on the

storage to be able to service all our test clients equally (see Figure 4).

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