Dell PowerEdge R810 매뉴얼 - 페이지 32
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Assumptions
Servers: Database consolidation on Dell PowerEdge R810 servers
We made many assumptions about the hypothetical enterprise that
drive the costs in this analysis. Different assumptions would create
a different cost picture. We made the following assumptions in
estimating acquisition costs:
The enterprise would dedicate the entire newer Dell
PowerEdge R810 server and the two Dell EqualLogic
PS5000XV storage arrays to the tasks carried out by the 24
HP ProLiant DL385 solutions it was replacing.
The log files would be on two internal disks on each legacy
server, and on four internal disks on the new server.
We made the following assumptions in estimating the support,
maintenance, and service contract costs for hardware:
The enterprise would typically select a 3-year support
package with 7-day, 24-hour coverage, and 4-hour
response time for newer hardware, and would take over
support internally after those agreements expire. Therefore,
for the Dell PowerEdge R810 solution, we included the costs
for 3-Year ProSupport for IT and Mission Critical 4HR 7x24
Onsite Pack in our cost estimates and divided those costs by
3 to show the annual cost.
The enterprise would dedicate the HP ProLiant DL385
servers and storage enclosures to the tasks our benchmark
tests model.
For the HP ProLiant DL385 solutions, we estimated an
annual in-house support cost of $400 per server and $300
per storage array, plus costs to replace failed disks based
on PT estimates of a 4 percent annual disk replacement
rate.
We made the following assumptions in estimating the costs of
software support agreements:
The HP ProLiant DL385 solutions used Windows Server 2003
R2 Enterprise Edition with per-server licenses, and the
enterprise kept up-to-date software assurance agreements
for that software.
The business updated the Dell PowerEdge R810 operating
system to Windows Server 2008 R2 Enterprise Edition by
upgrading one of the licenses used by the HP ProLiant
DL385 solutions.
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