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Robin England and the RAIDers of the lost data [podcast]

Robin England and the RAIDers of lost data

A list of questions posed to Robin England

  • What is RAID and what is it used for?
  • What benefits does it provide?
  • Any disadvantages?
  • Are they mainly for businesses or can home users benefit from it too?
  • Are RAID arrays difficult to set up? Maintain?
  • How do you decide when to use it? How do you know it’s the best solution for you? Are they most useful for certain setups (e.g. Hyper-V, MS Ex, SQL, etc.)
  • Is there a difference in performance between a RAID 5 and 6?
  • Any suggestions on best practices to configure your RAID setup?
  • What happens if the RAID fails? Is data easier to recover? Why?
  • So if one drive fails, is replacing it the best option? Would the data be at risk?
  • What happens if more drives fail? Is there some way to prepare for/prevent this (e.g. RAID 6)?
  • Any tips on what to do if a drive fails?
  • Have you noticed any trends on timing/number of drives that fail?
  • Many people tend to try to rebuild failed drives themselves. Any advice you can give them?
  • I’ve heard mixed advice re whether RAID drives should be labelled to help reconstruct the data in case of failure. Can you clarify this?
  • If data is lost, we normally tell people to turn off the equipment to prevent any potential further loss. Is this also true for RAID?
  • What should they consider when deciding to try to DIY and when to seek professional help?
  • Say the data has been lost. Can we restore the backup data onto the RAID system directly? Would it overwrite the missing data?
  • So we lost the data. We tried a few things and nothing worked. What should we do next?