Big Data Systems HPI

Quiz 0 Distributed Systems


Question

Consider a system containing 4 identical disks. Match the different performance characteristics ('Read + Write Speed') compared to a single disk to the specified RAID setup:

  • RAID 1+0, where disks are pair-wise mirrored
  • RAID 5, across all disks
  • RAID 0 across all disks

Answer
  • RAID 1+0, where disks are pair-wise mirrored → 4x read performance. 2x write performance.
  • RAID 5, across all disks → 4x read performance. 1x write performance.
  • RAID 0 across all disks → 4x read performance. 4x write performance.


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