Need to spec the RAM on Citrix PVS server to stream XenApp 7.6 workloads to target devices?

Hello there,

Need to spec the RAM on Citrix PVS server to stream XenApp 7.6 workloads to target devices? What are the recommendations, to size the memory in PVS server?

Please advise.

Thanks and Regards
goprasadAsked:
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CoralonCommented:
This is a trickier one.  You want enough RAM on the PVS server to cache the most used part of the OS, and that will depend *highly* on your workload.  

Ideally, you'll want as much RAM as you possibly can.  PVS *will* use that RAM as cache for the disk image.  (This is the reason that you can virtualize the PVS server without any real hit.. The devices are just pulling from the PVS RAM *most* of the time, as long as it is cached.  In the past, I had run a 48GB RAM PVS server running 5 Windows 7 images, and all of the cache was used all of the time.

Coralon
Carl WebsterCitrix Technology Professional - FellowCommented:
It all depends on how many vDisks the PVS server will be streaming and how large those vDisks are.  The actual size of the vDisk has nothing to do with how much is streamed to the target device.  A 40GB Windows 7 vDisk may never stream more the 3 to 5GB.  If the vDisks are on local PVS storage, the PVS server will cache in memory what it is reading.

http://blogs.citrix.com/2010/11/05/provisioning-services-and-cifs-stores-tuning-for-performance/

http://virtualfeller.com/2010/11/05/provisioning-services-and-cifs-shares/

I have seen PVS servers work just fine with 8GB RAM and have seen people put in 96GB RAM just because they could.

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