Who does that server really serve?

The IT industry discourages users from considering these distinctions. That’s what the buzzword “cloud computing” is for. This term is so nebulous that it could refer to almost any use of the Internet. It includes SaaS and it includes nearly everything else. The term only lends itself to uselessly broad statements.

The real meaning of “cloud computing” is to suggest a devil-may-care approach towards your computing. It says, “Don’t ask questions, just trust every business without hesitation. Don’t worry about who controls your computing or who holds your data. Don’t check for a hook hidden inside our service before you swallow it.” In other words, “Think like a sucker.” I prefer to avoid the term.

Richard Stallman


Virtual desktop infrastructure (VDI) Users have they own application spaces. Thin clients where applications might run ether locally or on server, shared filesystem, own graphics and audio, ability to connect local devices such as USB stick etc.

Remote desktop Service (RDS) is pretty much like having screen of the “big brother” server somewhere. All users logged into one server. It is usually more complicated to setup, limited connections and low performance however it might save you some dollars on software licenses.

There is even more modern way in desktop virtualisation. Bring Your Own Device (BYOD).

One more interesting option is to share running applications. For example you can run Photoshop on virtul machine and export an aplication window to the network. Then authorised users will login and use it one after another.

We are working to develop a strategy to combine all options as above in one cost effective DaaS solution.

04be64c98988d4fcb68500f5a5e17f2cSandbox cloud infrastructure might be in your own hands. With the private cloud, developers can deploy complete production-like development stacks—saving time and expense over traditional all-in-one box deployments, enabling faster handoff from development to operations. To move faster, these once soloed teams need to be tightly integrated and have the ability to provision their own environments on-demand rather than going through a long IT procurement process.

Calls for US government to act on loss of trust.

A new report by a non-aligned United States think tank warns the American cloud computing industry could take a major earnings hit, thanks to former NSA employee Edward Snowden’s revelations of indiscriminate government mass surveillance.

In the report [PDF], the Information Technology and Innovation foundation (ITIF) said if non-American companies decided the risks of storing data with US firms outweighed the benfits, the collection of electronic data from third-paties “will likely have immediate and lasting impact on the competitiveness on the US cloud computing industry”.

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Again. I was involved in administration of one project hosted in Amazon WS cloud. After using Linode it was such a disappointment. Too many complexity after simple Linode dashboard. And pricey. One strange thing: the instance had changed ip after reboot which shouldn’t ever happen.
There was also a story about Linode cloud. They migrated to another location and shut down our server. Linode support attempted to contact us via email but for some strange reason we missed the warning. That server was a kind of legacy and one website hosted was compromised. There were a lots of other websites hosted and thus affected by the whole server shutdown. So this is an example how easy we lost control of our own priduction servers.
Now I prefer to have a mixture of all kind of services. Preferable cheap ones. That includes the local infrastructure. Why not to host test or development in house for free? With caching proxy and replication I achieve redundancy high availability and backup for the price of bowl of chips.

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8ee49f7c5970475364f2e01f1b90e8a0A fully redundant storage for your VM´s with just no need of expensive SAN equipment, configured in about 30 to 60 minutes – starting from bare-metal. If you want to achieve a similar setup with traditional virtualization solutions with SAN you will need at least 4 servers boxes and the storage network.

Traditional setup with SAN (eg. iSCSI, NFS, FC):

  • Two servers for a redundant SAN
  • Two servers for redundant virtualization hosts
  • Extra storage network, VLAN´s, FC switches, etc
  • Complex setup

Proxmox VE with DRBD:

  • Only two servers with raid controllers and a bunch of hard drives (configure two raid volumes, one for Proxmox VE and one for DRBD device)

In two words private cloud is like virtualisation on steroids. However it still sitting on virtualisation technologies. Chosing the most suitable is the key to success. So let’s compare some well known market players.


  Proxmox VE VMware vSphere Windows Hyper-V Citrix Xen Server
Guest operating system support Windows and Linux (KVM)

Other operating systems
are known to work and are
community supported

(OpenVZ supports Linux only)

Windows, Linux, UNIX Modern Windows OS, Linux support is limited  Most Windows OS, Linux support is limited 
Open Source Yes No No No
OpenVZ container
(known as OS Virtualization)
Yes No No No
Single-view for Mangagement (centralized control) Yes Yes, but requires dedicated management server (or VM)  Yes, but requires dedicated management server (or VM)  Yes
Simple Licensing Structure Only one subscription pricing, all features enabled No No No
High Availability Yes Yes Requires Microsoft Failover
clustering, limited guest OS
Live VM snapshots:
Backup a running VM
Yes Yes Limited Yes
Bare metal hypervisor Yes Yes Yes Yes
Virtual machine live migration Yes Yes Yes Yes
Max. Ram and CPU per Host 160 CPU/2 TB Ram 160 CPU/2 TB Ram 64 CPU/1 TB Ram ?


Original table on ProxMox website: