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on 01-08-2010 11:59 AM
This IDC whitepaper examines the various architectural approaches to ensuring application uptime and availability, particularly a clustered file system approach with clustered services. The paper also looks at the role of Symantec's Veritas Storage Foundation Cluster File System (CFS) and Veritas Cluster Server (VCS) in this critically important market.
The Cost of Unavailable Applications
In today's global economy, application downtime is unacceptable because it leads to loss of revenue, productivity, and market goodwill. Many organizations rely heavily on back-end applications to process transactions, distribute information, and deliver services. The cost of these applications experiencing downtime can be astronomical. Historically, companies with a large Internet presence have reported million-dollar losses as a result of downtime. Though not all organizations will experience the same costs if failure occurs, there are clear implications associated with application unavailability, including the following:
To address the need for uptime, application vendors and infrastructure vendors have developed technologies that facilitate recovery in case of failure and ensure application continuity. There are three main levels of application availability: zero downtime (not even a minute), downtime of less than two minutes (common in business-critical database applications), and downtime of more than two minutes (broadest category with multiple levels within it). The technologies developed by vendors to ensure application availability can be described as the following:
The Cost of Unavailable Applications
In today's global economy, application downtime is unacceptable because it leads to loss of revenue, productivity, and market goodwill. Many organizations rely heavily on back-end applications to process transactions, distribute information, and deliver services. The cost of these applications experiencing downtime can be astronomical. Historically, companies with a large Internet presence have reported million-dollar losses as a result of downtime. Though not all organizations will experience the same costs if failure occurs, there are clear implications associated with application unavailability, including the following:
- Loss of revenue from return customers as well as from first-time buyers
- Loss in productivity directly linked to workers sitting idle, as well as whole production facilities (e.g., in a manufacturing environment) coming to a halt
- Loss of goodwill, especially among first-time visitors hoping to learn about the company and its products and services, as well as missed support service levels for existing customers
To address the need for uptime, application vendors and infrastructure vendors have developed technologies that facilitate recovery in case of failure and ensure application continuity. There are three main levels of application availability: zero downtime (not even a minute), downtime of less than two minutes (common in business-critical database applications), and downtime of more than two minutes (broadest category with multiple levels within it). The technologies developed by vendors to ensure application availability can be described as the following:
- Application parallelism
- High availability with shared storage resource
- Data replication with application failover
- Application failover on top of a clustered file system and clustered volume manager
IDC_796.pdf
384 KB
