Appendix b – sbc solution sizing, Online sizer tool – HP PROLIANT BL465C G7 User Manual
Page 28
28
Appendix B – SBC solution sizing
As with any laboratory benchmark, the performance metrics quoted in this performance brief are
idealized. In a production environment, these metrics may be impacted by a variety of factors,
including the following:
Overhead
Agents and services (virus scanning, backup and restore, provisioning, security, management and
more) automatically consume overhead. Rogue applications can consume additional overhead.
The system architect may wish to provide a 25% – 30% buffer to accommodate this overhead.
Future growth
To accommodate future growth, the system architect may wish to provide an additional buffer.
Alternatively, servers can be added as needed, taking advantage of the server farm’s inherent
ability to scale out.
User profiles
The particular application in use directly impacts the number of users supported by a particular
server. Further, user behavior can also impact scalability:
– Increased typing rates correspond to fewer users.
– Opening and closing applications (rather than switching between them) or moving quickly
between tasks can place a heavier load on the server.
– Sizing for this performance test was based on the Heavy User profile described in
. If
this profile does not match your needs, more profiles are available using the online sizer tool
(described below); alternatively, the system architect can consufor more
information.
Background grammar checking
Background grammar checking can significantly impact scalability, reducing the number of users
supported by as much as 50%. HP disabled background grammar checking for the testing
described in this performance brief.
Online sizer tool
To minimize risk, HP offers automated, downloadable tools that can help you size an HP SBC
solution. A sizer
is available for enterprise and small and medium business (SMB) environments.
The algorithms and methodology used by this sizer are based on the results of customer surveys and
thorough testing.
Figure B-1 shows the home page for the sizer.