What is the difference between RAID 0 & RAID 5?

Question

Henry · Accepted Answer

To expand on the previous answer, RAID 0 improves HDD performance dramaticaly,  but since there is no mirroring if one drive dies data is lost. RAID 0 should never be used on a system with critical data.

In RAID 5, performance is slower, but it allows for the failure of a HDD with no loss of data. 

Consider instead, RAID 10. It requires a minimum of four HDD's, but provides an increase in performance with redundancy.

Sigiloso · Answer

It should a simple question if you have worked with computers & HDDs. 
RAID 0 - Block striping (req. 2 HDDs) and no mirroring or parity
RAID 5 - Block striping with 1 dedicated parity drive (req. 3 HDDs)

Sigiloso · Answer

Through questions like this, interviewers are mostly trying to test your skillset (and its relevance to the role) as robustly as possible, so be prepared for multiple offshoots and followups.


It could be a useful exercise to do mocks with friends or colleagues in Avanade to get a real sense of what the interview is actually like. Alternatively Prepfully has a ton of Avanade  Systems Engineer experts who provide mock interviews for a pretty reasonable amount.


prepfully.com/practice-interviews

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