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Atlantis Computing Customer Blueprint: Kelway 1,000 User Citrix XenApp Architecture


Atlantis ILIO, Citrix XenApp 6.5 and VMware vSphere 5.1

The purpose of this document is to provide the implementation details of a 1,000 user Citrix XenApp deployment by Kelway, an international service provider, with Atlantis ILIO for XenApp™, Citrix XenApp 6.5 and VMware vSphere 5.1. Kelway has a no PC/laptop policy for their internal employees. They deploy applications and published desktops for these employees using 40 virtualized Citrix XenApp 6.5 servers on 8 HP ProLiant BL460c blade servers with Atlantis ILIO.

When Kelway acquired a company and increased the number of XenApp users by 20%, they found that help desk calls were increasing each month and that employees were getting unpredictable performance. Kelway examined their environment and found that they had a storage bottleneck with each XenApp session during business hours averaging 14 IOPS and peaking at 32 IOPS.

The EMC storage used for Kelway’s XenApp implementation was also shared with other server workloads including Microsoft SQL and Exchange. The result was that the storage processor utilization was high and causing performance issues for all workloads. To solve their storage bottleneck, Kelway faced a choice of upgrade their SAN storage or using some other form of storage for XenApp. Upgrading their SAN would require Kelway to spend over $50,000, almost doubling the cost per XenApp session. Ultimately, Kelway chose to use Atlantis ILIO for XenApp and leveraged local server memory as primary storage for their XenApp instances, which freed up their SAN for server workloads.

Using Atlantis ILIO for Citrix XenApp, Kelway was able to:

Cost and Storage Savings – Eliminated SAN storage used by XenApp virtualized servers, which saved them over $50 per user in storage CAPEX and freed up the storage system to support server workloads

  • User Experience – Increased performance of XenApp session by providing up to over 300 IOPS per XenApp session, resulting in 40% faster login times and 50% faster application launch times.
  • Operational Cost Reduction – Reduced help desk calls by over 70% the month following implementation of Atlantis ILIO
  • Density – Kelway was able to increase density by more than 20% after
    eliminating the storage bottleneck and the resulting CPU utilization reduction

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Atlantis Computing Atlantis, winner of the Best of VMworld and Best of Citrix Synergy awards, offers the industry’s most flexible and powerful Software-Defined Storage (SDS) platform. Atlantis delivers the performance of an all-flash array at half the cost of traditional storage. Atlantis HyperScale leverages the Atlantis patented SDS platform to deliver all-flash hyperconverged appliances that are 50 to 90 per cent lower cost than traditional storage or other hyperconverged appliances. To date, Atlantis has deployed over 120 petabytes of storage for more than 1,000 mission critical deployments and 1 million virtual workspaces, including some of the largest virtualization deployments in the world. Atlantis is privately held and funded by Adams Street Partners, Cisco Systems, El Dorado Ventures and Partech Ventures, with headquarters in Mountain View, California and offices in Europe.

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