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Monthly Archives: September 2015

The debate about disabling Hyperthreading in virtualized Exchange server is over

Anyone that virtualized Exchange server in recent years had stumbled into this conundrum: should I disable Hyperthreading on the physical server or not?

The main cause of  this confusion is conflicting recommendations coming from Microsoft and VMware on the subject, I am happy to say that this debate is finally over. As we at VMware have been saying all along, there is no need to disable Hyperthreading when virtualizing Exchange server; that recommendation was suitable only for physical servers and is irrelevant for virtual machines. Continue reading

SAP on VMWare Availability and Recovery Guide

SAP provides a range of enterprise software applications and business solutions to manage and run the complete business of a company. These mission-critical systems require continuous availability.

A correctly architected and highly available solution can provide applications such as those from SAP with acceptable operational uptime by countering the impact of unplanned downtime. Although downtime can also be planned for maintenance and patching activities, the unplanned outages have the greatest effect on production uptime.

SAP on VMware Availability and Disaster Recovery Guide covers high-availability solutions of virtualized SAP solutions on VMware, to protect against unplanned downtime in the same data center, and disaster recovery (DR) for entire site failure. Unplanned downtime refers to an outage in system availability due to infrastructure or software failure—server, storage, network, software, or operating system (OS) crash, and so on—or an entire site disaster. SAP products and solutions provide mission-critical business processes that must be highly available even in the event of a site disaster.

Oracle Database compression or Storage (All Flash) compression: A performance comparison

Database vendors like Oracle provide options to create compressed tablespaces to store the data. The perceived value is the reduced storage need. While the storage used can be potentially reduced, there is a possibility of negatively impacting CPU utilization of the database server for the compression related activity on the database server. Modern All Flash Storage arrays offer excellent compression and stores all data natively in compressed format. This study was done to compare performance of virtual machines using database and storage compression

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