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I just heard news about the article from Burton Group report. Basically, this reported review both Vmware View 4 and Citrix Xen Desktop 4 and conclude neither of these software are suitable for Enterprise. I would like to add some personal comments towards this issue.

No support for Low bandwidth and high latency?

In general, Citrix’s ICA/HDX can support connections with latency of 150 milliseconds or more and bandwidth of 50 Kbps without experiencing unacceptable performance degradation, and it integrates with external WAN acceleration devices by disabling ICA compression.

VMware View 4’s PCoIP does not meet the bandwidth/latency criteria of 50 Kbps/150 milliseconds, and IT pros are advised to use the “local desktops” feature to deliver virtual desktops across low-bandwidth environments. In addition, PCoIP does not support WAN acceleration devices because there is no way to disable PCoIP’s native encryption/compression feature.

In my opinion, View still relies on RDP connection which will be supported by WAN accelerator soon. According to our test, RDP can work on 30kbps with 150ms latency. Too shame for Vmware who bought third party trying to replace RDP. It still doesn’t work, does it?

Security, central management in one box and role-based access controls

XenDesktop 4.0 is missing a few “critical” features, including security logging and auditing of administrative actions and three-year support for its entire product portfolio. It also lacks security hardening guidelines and is complex to deploy, and the management console scales to only 5,000 desktops. VMware View 4’s management console has the same scalability maximum.

“Five thousand desktops is not very many when you are talking about enterprises with hundreds of thousands of desktops,” said Chris Wolf, a Burton Group virtualization analyst and co-author of the report. “This means they have to use multiple management consoles to manage their users, and that isn’t acceptable.”

Though VMware’s virtual desktop infrastructure (VDI) market share is growing, Burton Group doesn’t consider View 4 an enterprise-class server hosted virtual desktop platform because it lacks role-based access controls, enterprise management integration and Windows 7 guest support. It also needs a user application self-service portal (like Citrix Dazzle) and low-bandwidth WAN support.

Well, I’m not worry about this part. According to new View 4.5 features list, those above requirement are resolved by new version of View. I also believe W7 will be supported in the near future.

Now, I’m giving you partial feature list of View 4.5 as following.

–          “Local Mode” : off-line VDI finally out of experimental phase. There is also a new role in this scenario: the Transfer Server.

–          ThinApp 4.5 with Application Entitlement (assign applications to Desktop Pools; MSI only)

–          Tiered Storage : define different datastores for different datatypes (replica’s, userdata etc.) <- great feature !

–          Full Sysprep support

–          Disposable Disk technology (ability to identify Temp/Swap data in your image and clean that data automatically).

–          Snapshot support for Linked Clones (Floating Pool)

–          Role Based Administration

–          Kiosk Mode Desktop Pools (GUI suppression and device-based assignments)

–          Native MacOS client

–          Web Download Portal (for downloading the client software via the web)

–          A good dashboard with more event logging for better troubleshooting

So what do I concern for new View version?

According to above list, PCOIP still doesn’t provide good performance when users in low bandwidth condition. Also, the real problem I think for this new version is how to hybrid normal Terminal profile, normal user profile together. Also, how much resource a core can handle. According to Vmware blog, 16 virtual desktop per CPU core with best practice for View. This is much lower than TS can run on the ESX host. It actually make per Virtual Desktop cost pretty high comparing with TS solution.

Personally, I’m not worried about upgrade user profiles from previous version (XP to W7) since you would use central data for user data anyway when you implement VDI solution. All what you need to do is to educate user to save data to the right network location(it would be fast since most likely they would be in same subnet).



  1. PCoIP is certainly a great display protocol. However in some scenarios of slow remote connections (like over certain WANs) there may be issues where PCoIP doesn’t function quite as well. In those cases, you can complement the VMware View deployment with Ericom Blaze, a software-based RDP acceleration and compression product that provides improved performance over WANs. Besides delivering higher frame rates and reducing screen freezes and choppiness, Blaze accelerates RDP performance by up to 10-25 times, while significantly reducing network bandwidth consumption over low-bandwidth/high latency connections.

    You can use VMware View with PCoIP for your LAN and fast WAN users, and at the same time use VMware View with Blaze over RDP for your slow WAN users. This combined solution can provide enhanced performance in both types of environments, letting you get the best out of VMware View for your users.

    Read more about Blaze and download a free evaluation at:


    • hmm, Is this software like TCP/IP RAID? something like iPEAK? It uses for RAID network package and RAID it. So if you lost one package, you can still able to reconstruct it from others. But it depends on how much percentage package lost though.

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