Storage Management (ASM ACFS DNFS ODM) (MOSC)

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ASM on RAID-1 Versus RAID-5

edited Apr 23, 2009 12:00AM in Storage Management (ASM ACFS DNFS ODM) (MOSC) 5 commentsAnswered
  Being new to ASM,we are still trying to understand how having RAID-1 or RAID-5 volumes would work when using external redundancy

Let us take following 2 examples for simplicity sake

Scenario 1.
   We have 8 physical drives
   We create 4 RAID-1 volumes and present those 4 volumes to ASM
   We create DATA disk group off of those 4 RAID-1 volumes using external redundancy
   We create tablespace DATA and place that on +DATA disk group

Scenario 2.
  we have 8 physical drives
  we create a single RAID-5 volume using those 8 drives and present that volume to ASM
  We create DATA disk group off of those 4 RAID-1 volumes using external redundancy

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