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Exam 1z0-997-22 topic 1 question 55 discussion

Actual exam question from Oracle's 1z0-997-22
Question #: 55
Topic #: 1
[All 1z0-997-22 Questions]

You have been asked to deploy a mission critical workload into production on Oracle Cloud Infrastructure (OCI). The application is write-intensive and performs lots of disk IO. For this reason, you have decided to deploy it on a DenseIO VM shape with local NVMe drives. As the application is mission critical, you must both protect against NVMe device failure and maximise write performance.

How should you achieve this?

  • A. Configure RAID 1 for the NVMe devices.
  • B. Use rsync to copy all the data to a new identical VM instance if an NVMe drive fails on the original VM instance.
  • C. Mirror the NVMe devices to OCI object Storage using a Storage Gateway.
  • D. Configure RAID 10 for the NVMe devices.
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Suggested Answer: D 🗳️
by daws08322 at Nov. 5, 2023, 5:44 p.m.

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daws08322
1 year, 3 months ago
D. Configure RAID 10 for the NVMe devices. RAID 10 (also known as RAID 1+0) provides both data redundancy and improved write performance. It combines disk mirroring (RAID 1) with striping (RAID 0). This configuration helps protect your data from NVMe device failures as data is mirrored across multiple drives while also improving write performance by striping data across the mirrored pairs. This option offers a good balance between data protection and performance for mission-critical workloads. Options A (RAID 1) and C (mirroring to OCI Object Storage) offer data redundancy but do not provide the same level of write performance improvement that RAID 10 offers.
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