In the late 1960s and early ’70s, working at Bell Labs, Mr. Ritchie made a pair of lasting contributions to computer science. He was the principal designer of the C programming language and co-developer of the Unix operating system, working closely with Ken Thompson, his longtime Bell Labs collaborator.
via Dennis Ritchie, 70, Dies, Programming Trailblazer – NYTimes.com.
RIP
Now, what about throughput? The host’s networking resources are shared amongst the virtual desktops it supports and users will suffer from poor performance if there’s insufficient bandwidth available. As such, consider routing virtual machine traffic over an SLB bond so that it’s automatically load balanced across two NICs. Virtual machine traffic is load balanced by MAC address and rebalanced every ten seconds. Failover support is provided for all other traffic types, including management and IP-based storage traffic. The load balancing algorithm associates traffic from each virtual interface to one of two NICs in the bond. It’s important to understand that it doesn’t allow a single virtual interface to utilize both NICs in the bond simultaneously.
via Open Source Rack » XenServer for XenDesktop – How many network cards do I need?.
I can see this getting complicated fast. XenDesktop seems to use a lot of network bandwidth. Someone must have done a study on this. Thin clients have been a marque product for the last couple of decades. Wouldn’t it be nice if our clients didn’t have a hard drive — as if merely eliminating a hard drive would eliminate all IT support for that device.
Todo: Get XenDesktop running and do some tests and estimations.
The head of computer operations for Reed Specialist Recruitment, an employment service with operations on three continents, Whetstone recently upgraded his company’s 6,000 desktop computers. Chief information officers order new Dells or HPs all the time. But the computers Whetstone brought in for his employees aren’t the traditional metal boxes that sit next to desks or under monitors. They are “virtual” computers. Each employee has a keyboard and a screen, but the processors making the calculations and deciding what color goes in each pixel are far away, inside a big computer at Reed’s main data center in London.
via The Death of the PC – Forbes.com.
This is dated (12/28/2009) but interesting nonetheless. Thin clients never quite die either. 🙂
This nightmare scenario is, unfortunately, reality for at least 50 organizations – ones that I’ve been able to uncover – and I’m certain that there are many, many more. Each of these organizations has been a victim of a malicious alteration of their domain information – an alteration that added new machine names to their existing information, and allowed bottom-feeding scam artists to abuse their good reputation to boost the search-engine profile of their drug, app, “personal ad,” or porn sites.
File Sync & Online Backup – Access and File Sharing from Any Device – SugarSync.
The most popular plan is the 100GB for $150/year which comes to $1.50/GB/year. It costs around $0.18/GB to transmit and receive in BW costs based upon various datacenter estimates YMMV. The max, 250GB is $1/GB. Thus, a 1T storage requirement would probably be maybe $500/year? That’s just for storage.
Assuming a roundtrip for all data, bandwidth costs can approach $0.35/GB or close to 35% of the yearly cost for the 250G plan and %70 of the yearly cost on my mythical 1T plan.
Rackspace “Cloud Files™” is among the most popular and simplest cloud storage solution offered today. Cloud Files™ enables its users to have the ability to store unlimited files and media for content delivery at blazing fast speeds on its Limelight CDN Content Delivery Network. Some of the advantages of Rackspace CloudFiles™ include:
- Rackspace is the largest retail cloud storage provider today.
- Best technical support in the industry 24×7 365 days a year.
- Use as much or as little storage as you need.
- No minimum contract or commitments. Access your files from anywhere. High performance unlimited cloud storage for as little as 15¢/GB.
Another shoutout to Rackspace….
This article reviews some of the top open-source version control systems and tools that make setting up a version control system easy.
via 7 Version Control Systems Reviewed – Smashing Magazine.
I’m leaning towards Subversion or CVS.
OpenVPN Access Server is available as a VMware virtual appliance for deployment on Windows. To use the virtual appliance, you must download the virtual machine and run it with VMware software (such as VMware Workstation, VMware Server, VMware Player or VMware Fusion).
Via Using the OpenVPN Access Server Virtual Appliance VMware Version.
The Internet Real-Time Lab (IRT) in the Computer Science Department at Columbia University conducts research in the areas of Internet and multimedia services: Internet telephony, wireless and mobile networks, streaming, quality of service, resource reservation, dynamic pricing for the Internet, network measurement and reliability, service location, network security, media on demand, content distribution networks, multicast networks and ubiquitous and context-aware computing and communication.