1.

What Is Asm Striping?

Answer»
  • ASM can use VARIABLE size data extents to support larger files, reduce memory requirements, and improve performance.
  • Each data extent resides on an individual disk.
  • Data extents consist of ONE or more allocation units.

The data extent size is:

  • Equal to AU for the first 20,000 extents (0–19999)
  • Equal to 4 × AU for the next 20,000 extents (20000–39999)
  • Equal to 16 × AU for extents above 40,000

ASM stripes files using extents with a coarse method for load balancing or a fine method to reduce latency.

  • Coarse-grained STRIPING is always equal to the effective AU size.
  • Fine-grained striping is always equal to 128 KB.

The data extent size is:

ASM stripes files using extents with a coarse method for load balancing or a fine method to reduce latency.



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