Cloud Industry Solution


There are many good reasons why businesses are moving to cloud applications, for their IT and their business requirements. Low costs of ownership, scalability are speeds are some of the main reasons. Cloud-based deployments require rapid scaling on demand at times of high load. And so, there has been a clamor for low latency and high throughput storage devices. Solid State Devices (SSD) are gaining popularity because they provide this low latency, high throughput solution. All cloud providers now have SSDs as part of their offerings, as direct attached devices and also as network attached devices. Larger direct attached SSDs are only available with larger and more expensive instance types.


While instance store disks are fast and provide good IOPS, they are ephemeral and can lose data. The data on these devices need to be backed up at all times on a more reliable device type. PerfAccel provides the best way to use these high performance devices, by using them as the cache device and bringing your data closer to the CPU. This also has the additional benefit of saving on network traffic, by reducing the use of network backed EBS volumes. Also, the latency and throughput of instance store disks, notwithstanding, the horizontal scale out model of cloud environments, poses I/O performance challenges in cloud deployments. As the size of the cloud environment increases, IOPs starts to diminish, which in turn results in delays and higher costs. This coupled with the limited network bandwidth on cloud instances, results in dip in I/O performances.


What PerfAccel is able to do, is to provide a thorough and in-depth understanding of the I/O behavior in the cloud.

PerfAccel is able to provide deep analytics into I/O behavior that includes:

  • Tracking I/O, read hits and read misses
  • Tracking Latency and Throughput measurement at application level
  • Identifying Hot files

PerfAccel provides:

Storage visibility through deep file-level analytics

Intelligent caching & deterministic placement of hot files

Higher performance using fewer SSDs used optimally

Cost reduction

With such an IO tracking and analysis, administrators can use the instance store devices more efficiently by using the faster device available as a cache and through the optimal placement of frequently used hot data. The application directly benefits since all the reads coming from this device are much faster, increasing performance and reducing latency. In addition, since these read operations are offloaded by the cache, the back-end storage device which holds the entire data set is more responsive as it has to serve fewer IOPS. Thus, PerfAccel cache not only improves read performance, it also implicitly improves the write performance of the application.


Using the data intelligence, administrators can configure their caching policies and rules to ensure that the right working set resides in the cache. This would include:

  • Caching only hot areas of the file or frequently accessed files
  • Controlling which data to cache and which to not
  • Sticky flagging for performance critical data
  • Pre-fetching files for large jobs


A single GUI pane combined analytics and insight through performance dashboards, as well as a simple command line, for managing across large grid deployments with a centralized data repository for analytics. PerfAccel’s flexible interface let users configure their own policies of persistent cache, pre-fetching, predictive cache, real-time cache size configuration and auto-caching hundreds of NFS mount points.


DATAGRES provides software that helps companies visualize, control and accelerate their application performance using deep storage intelligence. DATAGRES’ flagship product PerfAccel is a very powerful analytics driven software solution that operates at a file level and can show the exact I/O pattern of an application data access especially in a scale-out grid environment. As a result, it can provide an effective way of controlling I/Os and also accelerate for higher throughput and lower latencies using high-performance SSD devices.

The company is headquartered in Palo Alto, California and is venture-backed by Nexus Venture Partners.

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