O'Reilly logo

Network+ Training Guide by Mike Harwood, Drew Bird

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

3.0—Network Implementation

Fault tolerance involves ensuring that when network hardware or software fails, users on the network can still access the data and continue working with little or no disruption of service. One of the most common fault-tolerance solutions is RAID. Table 19 shows various RAID solutions.

Table 19. RAID Solutions
RAID Level Description Key Features Minimum Disks Required
RAID 0 Disk striping No fault tolerance; improved I/Operformance 2
RAID 1 Disk mirroring Provides fault tolerance but at 50% disk overhead; can also be used with separate disk controllers, a strategy known as disk duplexing 2 (2 is also the maximum number of disks used for RAID 1.)
RAID 2 Disk striping with hamming code Limited use 3
RAID 3 Disk striping ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required