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NS0-157 · Question #53

A customer wants the best performance for their Oracle DB solution. They are willing to configure their high-availability nodes so the load is less than 50% per node, to protect performance during…

The correct answer is C. Flash Pool. Flash Pool enhances both read and write performance by combining SSDs and HDDs within the same aggregate, making it the correct choice for workloads requiring improved throughput in both directions.

Performance, Troubleshooting, and Security

Question

A customer wants the best performance for their Oracle DB solution. They are willing to configure their high-availability nodes so the load is less than 50% per node, to protect performance during failover. They want to enhance read and write performance. Which NetApp technology accomplishes this task?

Options

  • Adeduplication
  • Bthin provisioning
  • CFlash Pool
  • DFlashCache

How the community answered

(35 responses)
  • A
    9% (3)
  • B
    3% (1)
  • C
    83% (29)
  • D
    6% (2)

Why each option

Flash Pool enhances both read and write performance by combining SSDs and HDDs within the same aggregate, making it the correct choice for workloads requiring improved throughput in both directions.

Adeduplication

Deduplication reduces capacity consumption by eliminating redundant data blocks, but it does not directly enhance read or write I/O performance and can add CPU overhead.

Bthin provisioning

Thin provisioning allocates storage on demand to save space, but it is a capacity management feature that provides no read or write performance improvement.

CFlash PoolCorrect

Flash Pool uses SSDs as a cache tier within a hybrid aggregate alongside traditional HDDs, accelerating both read I/O (by serving frequently accessed data from SSD) and write I/O (by absorbing writes to the SSD tier before destaging to disk). This bidirectional performance benefit is critical for a write-intensive Oracle DB workload, and the technology operates at the aggregate level without requiring changes to the HA node pairing or failover configuration.

DFlashCache

FlashCache (the PAM card) is a read-only cache module that accelerates read performance only; it does not cache writes, so it cannot satisfy the requirement to enhance both read and write performance.

Concept tested: Flash Pool hybrid aggregate read and write caching

Source: https://docs.netapp.com/us-en/ontap/disks-aggregates/flash-pool-aggregate-caching-policies-concept.html

Topics

#Flash Pool#performance optimization#HA failover#read/write caching

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