a pc on every desk. a big mistake
DESCRIPTION
A PC is a too complex architecture to be given to every users. A “pc on every desk” probably was one of the biggest mistakes in the information technology era.TRANSCRIPT
Smaller footprint, same
complexity
A PC on every desk
Probably, one of the biggest error in
the information technology era
1
PC: a downsized mainframe
Same Von Neumann architecture: ALU, registries, memory, I/O, interrupts, HD, other devices
Same pile of sftw stacks: microcode, OS, drivers, system services, DB, applications
Together with:
o The difficulty, for a typical user, to run, administer, maintain and fine tune the system
2
User. Not a system engineer
Typical user doesn’t - and must not - have the
expertise necessary for everyday maintenance of
his “working tool”
3
Maintenance schedule
Best practices for a healthy PC (at least once in a week)
o Run antivirus & spyware removal tools
o Install the latest updates
o Backup the entire system
o Encrypt confidential data
o Check for errors and backup your local mailbox file
o Run utilities to check for dangerous problem like the “rootkit” infection
o Check for unwanted applications/services that eat system resources
o Check the hard disk for volume errors
o Continue ….. 4
Is Windows faulty ?
No, but:
The more the third party applications you add to the systems the more it becomes fragile and prone to crashes.
Like any complex architecture it requires an accurate and constant maintenance
Internet can be a dangerous source of, virus, spyware, malaware, ecc
Many users downloads and install uncertified and untested applications from the web
It was not designed to be a “closed” platform centrally managed by a team of expert
5
The solution ?
6
Time machine: back to 80s
7
What would have happened in a real world
Open platform Geek
Use
r
Closed & specialized
platform
Back to the future
Cloud computing
Midrange systems
“Closed” devices:
iPad
SaaS applications
8
Cloud Computing
Put back the platform's management issues in
the hands of the experts
OPEX: pay per use
SLA: support & maintenance fees are based on
the reliability index needed
Platform-free clients:
9
any combination of hardware & software able
to run a web browser
Midrange systems
Kind of “private cloud”
Ideal solution for “single-server” companies
Centralized model
Bring back the complexity into the “computer
room”
No more “personal” workstations
End of company data stored on users’ disks
Low-TCO terminals
SOA approach to integrate third party “SaaS”
solutions10
Legacy UI (User Interface)
Too often the wrong reason behind the abandon of a midrange reliable system
Modern tools allows easy UI to GUI mapping
Not always a modern GUI is the right choice
o 5250-UI is still the fastest way for data-entry operators
Multi-touch screens, hand-gestures or eye-movements recognition devices can be easily “connected” using SOA Web Services to access the Business Logic components.
11
Midrange Server
The one-size-fits-all model doesn’t apply
iPad
Closed platform
o Runs only certified applications
Almost whatever could be a source of problems
has been removed by design
Easy to use
Geeks hate it
Keegs (opposite of Geek) love it
13
SaaS applications
Google Docs - Office Live
All you needs is a browser
Data are stored “somewhere” in the Cloud
o Accessible everywhere from any device
14
Slim OSs
Chrome OS, iPhone OS, Windows EC 7, Ubuntu light, ecc
New Operating Systems designed to work exclusively with Web Applications
Google Chromoting
o Chrome OS extension to run "legacy PC applications" right in the browser
15
Present OS
Browser
ServicesLight OS
Browser
Services
