Dell H730P Uživatelský manuál stáhnout pdf (Strana 5)

A Principled Technologies test report 5

Consolidating older database servers with the Intel processor-powered

Dell PowerEdge R730xd using SanDisk DAS Cache

Figure 2: Regardless of the

storage configuration, the Dell

PowerEdge R730xd supported

six times the number of users

as the HDD-based legacy

server.

10,000

60,000 60,000

10,000

20,000

30,000

40,000

50,000

60,000

70,000

Legacy server with

HDDs

Dell PowerEdge

R730xd

w/ SATA SSDs

Dell PowerEdge

R730xd

w/ PCIe SSDs

Number of users supported

Figure 3 shows how the response time of the two Dell PowerEdge R730xd

configurations—while supporting six times as many users—was much faster than that of

the legacy server. With SATA SSDs, response time of the PowerEdge R730xd was less

than half that of the legacy server and with PCIe SSDs, response time was one-fourth

that of the legacy server.

Figure 3: Average response

time for the three

configurations across all

databases. Lower numbers are

better.

1.05

0.42

0.26

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Legacy server

with HDDs

(2 DB)

Dell PowerEdge

R730xd

w/ SATA SSDs

(12 DB)

Dell PowerEdge

R730xd

w/ PCIe SSDs

(12 DB)

Seconds

Average response time per database in seconds

(lower numbers are better)

Note that the number of databases we ran on each server was a function of

response time and CPU utilization. Running more than two databases on the legacy

server caused response time to go above the highest acceptable 2-second response

time. Running more than 12 databases on the Dell PowerEdge R730xd configurations

caused the server to reach above 75 percent CPU utilization for sustained periods.

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