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V-locity® is I/O reduction software that guarantees to solve the toughest application performance challenges on virtual servers. V-locity solves the two big I/O inefficiencies in virtual environments that rob 50% of bandwidth from VM (virtual machine) to storage with I/O characteristics that are much smaller, more fractured, and more random than they need to be. V-locity is transparent, set and forget software that solves this problem with large, clean contiguous writes and reads, so more payload is delivered with every I/O operation. In addition, V-locity further reduces I/O to storage by caching hot reads from idle, available DRAM. Nothing has to be allocated for cache since V-locity dynamically adjusts to only what is otherwise unused. Most customers serve 50% of their read traffic if there is at least 4GB of available memory during peak operation. If a system is memory constrained, V-locity's caching engine backs off entirely.

Key Features

V-locity is a “set and forget” software utility that installs on Windows VMs (no reboot required) or physical servers and runs automatically in the background with near-zero overhead to the server. What little CPU cycles are needed run at lowest priority so as not to interfere with server operations in the event that CPU cycles are needed by other applications.

V-locity’s patented write optimization eliminates the severe inefficiencies in the hand-off of data between the Windows OS and underlying storage that generate excessively small, fractured, random writes and reads that dampen performance. By providing Windows with the intelligence to write large, clean contiguous files in real-time, maximum payload is carried with every I/O operation to boost storage performance.

V-locity further reduces I/O to storage with its second patented engine – a DRAM read caching engine that serves hot reads from idle, available DRAM. Nothing has to be allocated for cache since V-locity dynamically adjusts moment-by-moment to only what is otherwise unused, so there is never an issue of memory contention. Many systems serve 50% of read traffic from DRAM if there is just 4GB of available memory that can be leveraged for cache. If a system is memory constrained, V-locity's caching engine backs off entirely.

Benefit Validation

The V-locity dashboard shows the value provided to any one VM or group of VMs by showing the percentage of read and write traffic offloaded from storage, total I/Os offloaded from storage, and how much “I/O time” is saved as a result. Admins can easily see the I/O capacity handed back to their storage subsystem from eliminating inefficiencies, see how much time that saves, and quickly identify key systems that would benefit greatly from V-locity’s caching engine by adding a little more memory.

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