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Category Archives: Performance & Tuning

The Trend from UNIX to Linux in SAP Data Centers (2012)

Linux and the x64 CPU architecture have arrived in SAP data centers as mainstream solutions. They are excellently suited to deliver system landscapes of both high performance requirements and high criticality. On the other hand some UNIX flavors are doomed in the long run. Customers waiting too long with the replacement of obsolete architectures might get into trouble either on technical, or economic level, or by running out of time when large infrastructures will have to be replaced quickly. Thus our advice is to act soon.


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Disk performance low – misaligned partitions

If the disk performance of multiple disks under Windows Server is slow, this might be due to misaligned partitions on the server. This could happen e.g. under Windows Server 2003, if the setup did not take this possibility in account.

In short: the real physical blocks of data on a disk are not perfectly aligned with the locical blocks, an operatingsystem or a virtual machine sees.

a goood animated picture can be found here:


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REALTECH is invited to exclusive SAP HANA Council at SAP Headquarters

REALTECH is proud to be invited to the SAP HANA Council:

“This SAP HANA Council will carry forward the future of innovation at SAP. Working with customers across the globe in various industry segments, we are seeing a number of trends in this area that would benefit from more in-depth discussion in the exclusive environment of a SAP HANA Council with our most valued customers.
This exclusive event is for a specially selected audience only and offers a unique opportunity to experience first-hand the latest innovations at SAP and discuss face to face with senior SAP HANA executives what the future of innovation at SAP holds.” (excerpt from invitation, from Gerhard Oswald and Vishal Sikka)


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Notebook too loud? Control the fan yourself

On some notebooks, the fan spins too high and therefore the notebook is too loud. (See also Rudolfs post a couple of weeks ago)

For some Notebooks there is help available. For example, the excellent free software HWINFO32/HWINFO64 con not only display information about your PC, but also has the function of fan control:

“This fan control allows to set fan speed manually and modify the LUT (Look Up Table) which is activated when the controller is in automatic mode.”


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REALTECH Managed Services – a great success

REALTECH Managed Services combine the benefits of traditional “on-site consulting” and “remote services” for SAP environments.

Sometimes On-Site Consulting is good suited for SAP Projects, and sometimes remote services are sufficient. REALTECH is now offering the best of both worlds and this is called “REALTECH Managed Services”.

Basically it consists of a so called “Service Manager” that is regularly on site and discusses with the customer what are the projects in the pipe. These projects are then conducted by consultants in the back office, that can be on site though as well, if the project or the customer requires it.


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