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Citrix – How to Bring Complete Optimization to Citrix VMs

Citrix® XenServer virtualization moves computing into a whole new realm. The considerable advantages include savings in space and energy, hardware resource reduction, and many others. There are a number of impediments to virtual machine performance, however, which must be addressed before full VM potential is realized. Within virtual machines, I/O bottlenecks – and hence, slow performance – occur as a result of data fragmentation in logical disks. Beginning right at installation, data at Windows operating system level is saved in a fragmented state. The reading and writing of data requires additional I/Os, underlying hardware notwithstanding. Performance is reduced even further as VMs are added.

If virtual disks are set to dynamically grow, they do not shrink as a result of the deletion or removal of data by users. System performance and storage utilization suffer greatly as these shared resources become increasingly more fragmented and bloated, resulting in I/O bottlenecks. The resolution to these I/O bottlenecks and wasted space often require substantial hardware expenditures that cost businesses time and money, compromising business productivity. But there is a better, more cost effective solution.

V-locity® VM accelerator is a virtual storage and application performance software that delivers proactive, invisible, high-performance I/O optimization to virtualized environments. V-locity eliminates I/O bottlenecks by preventing file fragmentation at the file system level in the virtual machine, thereby reducing file I/O and enormously improving the performance and efficiency of virtual platforms, automatically and cost effectively while minimizing the impact on IT staff.

Read the best Practices for Using V-locity on Storage Area Networks »

What is the Key to Citrix XenServer VMs Optimization?


There is only one solution – V-locity® VM accelerator – that brings complete optimization to Citrix XenServer VMs. Little to no hands-on intervention is required for automatic, transparent and intelligent maximizing of application and storage performance.

Proprietary IntelliWrite® technology means a majority of fragmentation on virtual disks is prevented before it even happens. Throughput in VMs is faster due to the elimination of unnecessary I/Os, and the addition of VMs no longer results in performance degradation. IntelliMemory caching technology improves I/O response time by using RAM cache more efficiently. Combined these technologies increase virtual platform reliability, application performance, file access speeds, storage capacity utilization, hardware life, VM density and result in lower operating costs.

Another proprietary technology called V-Aware automatically eliminates defragmentation resource contention between virtual machines on the same host server. For shared resource systems such as SANs, CogniSAN technology allows transparent optimization with no resource competition with other VMSs in the same storage infrastructure.

There is no further occurrence of wasted, unused disk space, as the Space Reclamation Engine will automatically detect if the storage device supports SCSI thin provision commands and if so, uses them to reclaim the unused data blocks for better storage utilization and faster writes to the disk. Users can now easily compact virtual disks by zeroing out the unused data blocks on virtual disks.

There is no negative impact on current production because of V-locity tasks; InvisiTasking® technology allows fully invisible operation, the only effect on performance being positive.

"As businesses move to virtual space, the need to maintain performance and efficiency becomes more critical. One of the most cost-effective ways to achieve these goals is with a virtual platform disk optimizer. If your business has reached the point where resource bottlenecks and file speeds are confining your service levels,then V-locity may be the answer.

"V-locity is an inexpensive alternative to storage hardware upgrades aimed at increasing file access speeds and reducing support traffic. An often hidden cost associated with the latter – energy use – is also benefited by applying a software solution rather than storage upgrades."

— TechRepublic

Read Review »

"V-locity works well for servers and is specifically tailored for virtual machines, thus minimal impact, which is important for any VM infrastructure. It's great to find products specifically written for VMs. In addition, the option of different install methods makes it easy to roll out in any environment."

– Darhyn Armstrong, Parkland Public School District #70

Download a free trial of V-locity to test on your virtual platform today »







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