Redundancy

Redundancy is the practice of having duplicate components to provide alternatives in the event of failure and is recommended for workstations, servers, internet connections as well as other network devices.

Workstations and Servers
redundancy - pc server

Network Components
redundancy - network

Multiple Connections
redundancy - connections

Prevent Data Loss Prevent Downtime Prevent Connection Loss
Redundant components inside a workstation or server can provide protection against failure. When network components fail, finding a replacement can become a scramble.  Having duplicate spare parts can eliminate this hassle as well as reduce the downtime involved in component failures. As organizations move toward cloud computing, having a secondary internet connection becomes more important.  Multiple internet connections enables organizations the ability to continue operations when a failure occurs.
  • Multiple internal hard drives
  • RAID (mirroring, striping)
  • Power supplies
  • Fans
  • Processors
  • Network Cards
  • Switches
  • Firewalls
  • Access points
  • Workstations and Severs
  • Cabling
  • Internet Providers
  • DSL
  • Cable
  • T1

 

What is RAID?

Redundant Array of Independent Disks is data protection technology that has multiple disks in a machine acting as one. RAID can be configured with as few as two drives, or for “hot swappable” abilities, using four drives. RAID configurations are called levels. RAID 1 and RAID 5, are the most common configurations that use a combination of stripping (writing data across drive for performance) mirroring (writing data identically to all drives for continuous availability) and parity (writing location information for all the data).

RAID 1 is mirroring data across two drives to provide redundancy but has delayed access times. RAID 5 takes four or more drives, stripes and mirrors data with parity to create a set that is hot swap capable, giving the ability to insert a new hard drive which rebuilds itself with no interruption to users.

RAID is a flexible, expandable solution to a complex problem. When implemented correctly, RAID-enabled hard drives save time and money. The point of RAID is to either make data access faster, make data more failure-proof, or both.