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IBM and Atlantis Computing join forces to deliver optimized solutions for Citrix XenDesktop and Citrix XenApp (Part two)

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Co-authored with Seth Knox, VP of Products, Atlantis Computing

In part one, we learned about IBM and Atlantis computing answering the customers’ call for simplified deployment of desktop virtualization and reduction of deployment risks. In part two, we will discuss the technical details of the three solution approaches, including test results.

IBM Innovation Center Benchmark Testing

The IBM Innovation Center conducted extensive performance, scalability and reliability testing. The testing included measuring:

  • The storage density and optimization that could be achieved with Atlantis ILIO
  • Reliability and high availability during server outages
  • Desktop performance using industry standard benchmarking tools such as LoginVSI 3.7 (Medium workload), ioMeter and PassMark Performance Test 8.0.
  • Add in the storage configuration and server configuration tested

*Percentage reduction measured from and equivalent system without Atlantis ILIO software.

Persistent VDI test results

Persistent VDI storage capacity reduction with Atlantis ILIO Software (see table above)

The test results showed that Atlantis ILIO was able to increasing storage density per disk by up to 33 times, while maintaining a server density of 125 virtual desktops per server (2x Intel Xeon E5-2670 with 256GB RAM). When tested using ioMeter with an industry-standard VDI IO profile (80 percent write, 20 percent read, 80 percent random, 4K blocks), the Atlantis ILIO virtual machine was able to deliver 37,243 per server. With a server density of 125 virtual desktops, this means that each virtual desktop has access to a minimum of 297 available IOPS and the ability to burst up to thousands of IOPS per desktop when needed. High Availability (HA) testing using Atlantis ILIO Persistent VDI 4.0 was able to show automated fail-over and recovery within 10 minutes. Performance testing using ioMeter, LoginVSI and PassMark showed desktop performance that was 3-4x faster than a typical physical PC user experience with 25 percent faster disk performance than a PC with a dedicated SSD.

Persistent VDI response time in miliseconds (LoginVSI 3.7 Medium Workload)

Persistent VDI PassMark Performance Test 8.0 benchmark: Atlantis ILIO persistent VDI disk performance compared to PC storage (SSD, SATA Hard Disks)

Diskless VDI test results

The test results showed that Atlantis ILIO was able to increasing storage density per disk by up to 55 times, while maintaining a server density of 125 virtual desktops per server (2x Intel Xeon E5-2670 with 256GB RAM). When tested using ioMeter with an industry-standard VDI IO profile (80 percent write, 20 percent read, 80 percent random, 4K blocks), the Atlantis ILIO virtual machine was able to deliver 45,209 per server. With a server density of 125 virtual desktops, this means that each virtual desktop has access to a minimum of 361 available IOPS and the ability to burst up to thousands of IOPS per desktop when needed. Performance testing using ioMeter, LoginVSI and PassMark showed desktop performance that was three to four times faster than a typical physical PC user experience with 32 percent faster disk performance than a PC with a dedicated Intel SSD.

Stateless VDI storage capacity reduction with Atlantis ILIO software (see table above)

Stateless VDI response time in milliseconds (LoginVSI 3.7 Medium Workload)

Stateless VDI PassMark performance test 8.0 benchmark: Atlantis ILIO stateless VDI disk performance compared to PC storage (SSD, SATA hard disk)

Citrix XenApp test results

In order to validate the IBM PureFlex System with Atlantis ILIO for Citrix XenApp solution, the IBM Innovation Center conducted extensive performance, scalability and reliability testing. The testing included measuring the density that could be achieved with Atlantis ILIO and desktop performance using industry standard benchmarking tools such as LoginVSI 3.7 (Medium workload) and ioMeter. The results showed that Atlantis ILIO was able to achieve a server density of 200 XenApp user sessions per server (2 x Intel Xeon X5650 with 256GB RAM). Performance testing using ioMeter and LoginVSI showed desktop performance that was 4.5x faster than the LoginVSI acceptable XenApp response time with 242 IOPS per XenApp user session at peak (ioMeter).

Virtualized XenApp Server Instance storage capacity reduction with Atlantis ILIO Software (see table above)

Virtualized XenApp response time in miliseconds (LoginVSI 3.7 Medium Workload)

The test results achieved with the joint IBM/Atlantis solution demonstrated consistently high desktop performance, while reducing storage requirements by up to 95 percent. Built on validated reference architectures they deliver optimized user experience for virtual desktop environments while minimizing deployment risks and solution cost.

Contact your IBM Business Partner, reseller or IBM Sales Rep for more details on this solution (or exchange ideas with @AndreasGroth).

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