TAPE BACKUPS

HENNO

Can tape backups be regarded as providing fault tolerance?
This came up in a discussion. Can anyone help, thanks

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Comments

bighornsheep

Yes...backups in general is what fault tolerence is all about.

deneb829

I have heard it more in terms of the system continuing to operate even after a hardware failure. Like RAID 1 and RAID 5, or dual power supplies or SCSI or RAID controllers. I think tape backup may be considered more disater recovery than fault tolerance.

sprkymrk

Deneb829 is correct. Though Fault Tolerance and Disaster Recovery are closely related, there are subtle differences that you need to know in regards to the Network+ exam. See the technotes here:

http://www.techexams.net/technotes/networkplus/fault_disast.shtml

That said, some definitions of Fault Tolerance do include tape backups, though not many. See:

http://www.google.com/search?hl=en&q=define%3A%22fault+tolerance%22

However, for the Network+ exam, make sure to keep them seperate in your mind.

theseman

Agreed ^

Try to think of it like this:

Fault tolerance = providing redundancy, eliminiating single points of possible failure. i.e. Having two DNS servers.

Disaster Recovery = how efficiently and quickly you can recover from some type of failure (hardware, network etc) i.e. Having good backups.