Entries by Ingmar Verheij

No network on WANem (Citrix XenServer)

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Author : Ingmar Verheij WANem is (as the name implies) a WAN emulator that’s available for free and therefor ideal to use in a lab environment. WANem is built on the Knoppix distribution and supplied as a bootable ISO or a virtual appliance. Unfortunately the virtual appliance is only provided for the VMware hypervisor. I’ve […]

Determine WAN latency for remoting protocol

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Author : Ingmar Verheij Latency is the time required for a package to travel to its destination. Latency arises because the media the packet is travelling on has limits (for instance bandwith) and because the packet has to be processed by systems (like NIC’s, switches, routers, etc.). The more items in a chain the bigger […]

Whitepaper : Quantify Perceived Performance

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Author: Ingmar Verheij Determining the user experience is challenging since the experience is based on many factors. The performance of an application is one of the factors that determine the user experience. If the performance of an application is bad, the user will grade the experience as bad. Ingmar VerheijWas once an enthusiastic PepperByte employee […]

Quest vWorkspace mugs are cool :-)

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Author: Ingmar Verheij   Or are they HOT? Ingmar VerheijWas once an enthusiastic PepperByte employee but is now working at Citrix. His blogs are still valuable to us and we hope to you too.

Place all objects in a RES Workspace

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Author: Ingmar Verheij After an upgrade from RES PowerFuse 7 to RES Workspace Manager 2011 all objects where not bound to a workspace. One of the benefits of Workspace Manager 2011 is the ability to control multiple environments (like mobile workers with laptops and central workers on terminal servers) from the same database. These different […]

VMware shared folders keep profiles in use

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Author : Ingmar Verheij When Microsoft Windows systems are virtualized with VMware ESX or Workstation, WMware Tools is installed. When the VMware tools are installed with the Complete option, the shared folders option is enabled. This feature is not enabled when you install VMware tools with the Typical option. The shared folder feature is not […]

No data collected from HP EVA

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Author : Ingmar Verheij Recently I wrote a management pack to retrieve capacity data from a HP Enterprise Virtual Array (EVA) in System Center Operations Manager (SCOM). Recently I found out that no data is collected. Execution of the Python script resulted in the following error: c:\Python26\python.exe “C:\Python26\Temp\QueryEVA2.py” -s bsma001.xxxx.local –port 5988 -u SVC_SCOM_AA -p […]

Ahead of the Hype Cycle

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Author : Ingmar Verheij Gartner analyses the maturity of more than 1,800 technologies trends. Based on the maturity of a technology or trend a decision can be made to adopt or ignore, postpone or adopt the innovation. In 2010 Gartner published the ‘2010 Special Report’ and consisted of 75 individual Hype Cycle reports, each of […]

Failed heartbeat unnoticed in Distributed Application

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Author : Ingmar Verheij System Center Operations Manager (SCOM) monitors the health of systems with an agent. One of the most basic checks that is executed is a health check of the agent itself. One of the checks is a heartbeat between the agent and the RMS (Root Management Server). If the heartbeat is lost […]

Monitor “HP Proliant Server” health on “Citrix XenServer” with Nagios

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Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. After experiencing problems with a HP Proliant DL380G6 that unexpectedly restarts, caused by a Automated Server Recovery (ASR), monitoring the status of the Citrix XenServers running on HP Proliant Servers is required in […]