I need a simple and short explanation of what each of their products allow you to do and what they're used for.
VMware and Citrix server virtualization do almost the same thing with nearly same options, on the other hand Citrix Xenapp and Xendesktop is far more advanced and efficient and have their own secured protocol. I've been using Citrix Xenapp for long time, it is an amazing solution saving huge cost related to communication channels and software license. Also I implemented Citrix Xenapp on VMware and HyperV. The stability of Citrix over VMware is far more better than over HyperV. We used the Citrix Xenapp to streaming Oracle EBS and Microsoft office to remote users (about 13000 user) it served up to 1600 concurrent user very efficient.
Sure, at a high level:
VMware products allow you to set up multiple virtual servers on a single physical server. This allows you to run the virtual servers on the physical server resources. It is an easy way to replicate environments so that there are no surprises when you go to production. You can set up development, QA and UAT all on the same physical box which are identical.
Citrix products allow you to process at a data center where your computing power is located. The user attaches to the Citrix network from remote location, uses the application which runs at the data center but only the screens and data is transferred. The process eliminates latency in distribution to remote user locations. Using Citrix a document can be created in Philadelphia and viewed in Hong Kong virtually without any user detectible delay because all of the processing was done at a data center in Philadelphia.
Hope this helps. Let me know if you need more details.
VMware and Citrix XenServer both are Bare metal (Type1) Virtualization Software. Both are good. But VMware is too user friendly and good for Enterprise as well. Whereas, Citrix is good for SMB.
In short, there are so many options with each company that it is hard to provide a short sweet answer. From my experience, Citrix has been used primarily to enable one to access computers and systems remotely as well as a tool to enable folks to get together via an online meeting format. VMWare, conversely, has been used for virtual environments where one could host their servers, say up to 4 or 5 of them, virtually, on each ESXi host machine. Again, each company has many products, however I have thought of them as an apples verses oranges comparison in as far as the service/products they offer. One can explore Citrix products at http://www.citrix.com/products.html?posit=glnav and VMWare products at http://www.vmware.com/products/.
Adding to Howard's points, you can virtualize NetScaler as well. It is now replacing Cisco's Load Balancing line of products. Citrix XenServer also allows for users to build their own Cloud.
As with Rakesh's comments, Citrix can provide some of same benefits.
1. Reduce physical space in the data center, thereby reducing physical server maintenance, cooling costs and OPEX.
2. Using templates, you can deploy virtual servers in hours instead of days or weeks with physical purchases.
3. With Desktop virtualization, Microsoft has VDA licensing. Server OS licensing remains the same.
Overall, both vendors have their own key points of expertise, it will depend on what you really want to accomplish with virtualization.
Which products specifically?
Haven't used citrix but had been useing VMWARE , I will therefore concentrate on VMware alone.
VMWare benefits on Multiple fronts
1. Reduce Physical Space of Data Center
2. Reduces Physical Server Maintenance Cost and thereby OPEX
3. Make implementing Redundancy much Easier
4. Servers are Up in Days compared to conventional methods where we needed to procure physical Servers
5. Reduce Energy Cost as we have reduced number of Physical Servers
6. Reduces Windows OS licensing cost
Adding to Howard's points above, VMware uses their existing Hypervisor platform to enable customers build their own Cloud too.
Vmware and Citrix both do similar things. They both offer server virtualization and desktop virtualization (plus other related software). VMware is the clear market leader for server virtualzation (Vsphere) and Citrix is the leader in desktop / application virtualization (Xendesktop / Xenapp). They both offer network software enhancements (and Citrix has NetScaler hardware). If you have any questions, please email firstname.lastname@example.org
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