Ask the Expert

What is the difference between horizontal and vertical scaling?

What is the difference between horizontal and vertical scaling?

    Requires Free Membership to View

Linux extends applications and database capability with platform coverage and scalability. Horizontal and vertical scaling meet business processing demands across multiple platforms and computing architectures. Scalability is a key success factor for business applications in a dynamic environment. Platform scalability is expressed in the number of processors driven by one operating system (2-way, 4-way, 8-way and so on).

The growth of processors within one operating environment is called vertical scaling. Horizontal scaling is leveraging multiple systems to work together on a common problem in parallel. Each system has its own operating system and one or more processors controlled by each system image. "Blade Servers" are based on this model where a dedicated processor board with one or more processors runs Linux on each board. With full horizontal scaling, tasks can be split up across multiple Linux images running on multiple systems. Linux runs six of the ten supercomputers in They are:

  • #2 ASCI-Q (Los Alamos) 13.8 TFs (Alpha)
  • #3 MCR (Lawrence Livermore) 7.6 TFs (Xeon)
  • #6 ASCI Linux Clusters (Lawrence Livermore) 6.5 TFs (Xeon)
  • #8 Pacific Northwest National Labs 4.8 TFs (Itanium)
  • #9 Pittsburg Supercomputing Center 4.4TFs (Alpha)
  • #10 Commissariat a l'Energie Atomique 3.9TFs (Alpha)

Also, in the BlueGene/L IBM's new supercomputer, the letter "L" in the title stands for Linux.

This was first published in September 2003

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: