Home > Blogs > VMware VROOM! Blog > Author Archives: John Liang

Author Archives: John Liang

VMware vCloud Director 1.0 Performance and Best Practices — Paper Published

Do you want to know how many VMware vCloud Director server instances are needed for your deployment? Do you know how to load balance the VC Listener across multiple vCloud Director instances? Are you curious about how OVF File Upload behaves on a WAN environment? What is the most efficient way to import LDAP users? This white paper, VMware vCloud Director 1.0 Performance and Best Practices, provides insight  to help you answer all the above questions.

In this paper, we discuss VMware vCloud Director 1.0 architecture, server instance sizing, LDAP sync, OVF file upload, vApp clones across vCenter Server instances, inventory sync, and adjusting thread pool and cache limits. The following performance tips are provided:

  • Ensure the inventory cache size is big enough to hold all inventory objects.
  • Ensure JVM heap size is big enough to satisfy the memory requirement for the inventory cache and memory burst  so the vCloud Director server does not run out of memory.
  • Import LDAP users by groups instead of importing individual users one by one.
  • Ensure the system is not running LDAP sync too frequently because the vCloud database is updated at regular intervals.
  • In order to help load balance disk I/O, separate the storage location for OVF uploads from the location of the vCloud Director server logs. 
  • Have a central datastore to hold the most popular vApp templates and media files and have this datastore mounted to at least one ESX host per cluster.
  • Be aware that the latency to deploy a vApp in fence mode has a static cost and does not increase proportionately with the number of VMs in the vApp.
  • Deploy multiple vApps concurrently to achieve high throughput. 
  • For load balancing purposes, it is possible to move a VC Listener to another vCloud Director instance by reconnecting the vCenter Server through the vCloud Director user interface.

Please read the white paper for more performance tips with more details. You can download the full white paper from here.

VMware vCenter Update Manager Sizing Estimator Posted

VMware vCenter Update Manager is a component of VMware Infrastructure that automates patches and upgrades of ESX hosts, virtual machine Tools and hardware, Windows and Linux virtual machines, and virtual appliance. A new sizing tool, VMware vCenter Update Manager Sizing Estimator, is now available.

 

The following input parameters are used to estimate database size, patch store disk space, and temporary disk space:

       Feasibility for virtual machine remediation

       Number of ESX and ESXi flavors in the deployment

       Number of hosts, virtual machines, Windows distributions, average number of locales for Windows distribution, average number of different Service Pack levels for Windows distribution,

       Patch scan frequency for virtual machines

       VMware Tools upgrade scan frequency for virtual machines

       Virtual machine hardware upgrade scan frequency

       Patch scan frequency for hosts

       Upgrade scan frequency for hosts

 

The following are the outputs from the tool:

       VMware vCenter Update Manager 4.0 database deployment model recommendations

       VMware vCenter Update Manager 4.0 server deployment model recommendations

       Initial disk space utilization in MB for database, patch store, and temporary space

       Monthly disk space utilization growth in MB for database and patch store

       The upper and lower bounds on the estimation, assuming a 20% variance

 

 

 

 

VMware vCenter Update Manager Performance and Best Practices White Paper Posted

VMware vCenter Update Manager is a component of VMware Infrastructure that automates patches and upgrades of ESX hosts, virtual machine Tools and hardware, Windows and Linux virtual machines, and virtual appliance. A new white paper, VMware vCenter Update Manager Performance and Best Practices, is now available.

In this paper we discuss VMware vCenter Update Manager 4.0 host deployment, latency, resource consumption, guest OS tuning, high-latency networks, and the impact of on-access virus scanning. We also provide performance tips to help customers tune the system for better performance.

VMware Update Manager Performance and Best Practices Paper Posted

VMware Update Manager (VUM) is a component of VMware Infrastructure that automates patches and upgrades of ESX hosts as well as Windows and Linux virtual machines. A new white paper, VMware Update Manager Performance and Best Practices (http://www.vmware.com/pdf/vum_1.0_performance.pdf), is now available.

In this paper we discuss VUM 1.0 host deployment, latency, resource consumption, guest OS tuning, high-latency networks, and the impact of on-access virus scanning. We also provide performance tips to help customers tune the system for better performance.