nerdexam
Oracle

1Z0-058 · Question #109

You are allocating space from the ASM disk group for an ADVM volume. What will be the volume extent and Volume Allocation Unit (VAU) if the stripe column is 4 and AU is 1 MB? Which are the default…

The correct answer is B. The volume extent is 64 MB and the VAU will be 256 MB. Stripe column and stripe width are two important attributes that can be specified for a volume determining how space is allocated for a volume and how space is allocated within a volume after ACFS or third party file system is created on a volume and a file is created or…

Administer ASM

Question

You are allocating space from the ASM disk group for an ADVM volume. What will be the volume extent and Volume Allocation Unit (VAU) if the stripe column is 4 and AU is 1 MB? Which are the default values?

Options

  • AThe volume extent is 64 MB and the VAU will be 512 MB.
  • BThe volume extent is 64 MB and the VAU will be 256 MB.
  • CThe volume extent is 32 MB and the VAU will be 256 MB.
  • DIt is not possible to calculate these values with the given information.

How the community answered

(20 responses)
  • A
    5% (1)
  • B
    75% (15)
  • C
    5% (1)
  • D
    15% (3)

Explanation

Stripe column and stripe width are two important attributes that can be specified for a volume determining how space is allocated for a volume and how space is allocated within a volume after ACFS or third party file system is created on a volume and a file is created or extended on the file system built on that volume. Both attributes are specified at volume creation time and cannot be changed later. If there is no value a default value is used. Volume Allocation Unit (VAU) is the smallest allocation for a volume. Whenever a volume is created or extended space is allocated in multiple of VAU. VAU size is determined by the Volume Extent (VE) and the stripe column. VAU is the product of VE and the stripe column. Volume Extent is based on the Allocation Unit (AU) specified on a disk group and for AU with size of 1MB the VE is 64MB. Whenever a VAU is allocated VE are allocated in a round robin fashion across the disks in a disk group. Volume size is always multiple of the VAU. For example if a volume is requested with size 200MB and stripe column is 4 and AU is 1MB one VAU with size 256MB will be allocated and the volume size will

Topics

#ADVM volume extent#VAU calculation#stripe column#AU size

Community Discussion

No community discussion yet for this question.

Full 1Z0-058 Practice