re:RAID AND FALLBACK

Database
Enthusiast

re:RAID AND FALLBACK

Hi,

  What is the need for having FALLBACK option during creating Tables when we have RAID-1 which has a mirror copy of a disk.doesnt it add overhead and cost?

Thanks,

Vijayshankar

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2 REPLIES
Enthusiast

Re: re:RAID AND FALLBACK

Fallback does add overhead and cost.  The value is an additional level of protection.  If an AMP goes offline for some reason, a fallback-protected table is still accessible.  Fallback also provides a means of recovery from data corruption due to software or CPU faults that RAID controllers cannot detect.

Enthusiast

Re: re:RAID AND FALLBACK

Thanks a lot for the reply