ASM Disk Group Creation During GI 19c Installation
Short answer
BE The Installer permits the creation of a disk group for the Recovery Area for the ASM instance and for use by the voting disks and OCR file.
Question
Key Takeaways
Tests knowledge of ASM capabilities during GI setup, specifically distinguishing between clusterware files and database recovery areas while avoiding the quorum failgroup trap.
Determines the correct statements about ASM disk group creation during Oracle Grid Infrastructure 19c installation, focusing on recovery area and voting file configurations. This page clarifies that the installer allows creating disk groups for both purposes.
Common mistake: Many users select D because they assume a 'quorum failgroup' is required for all voting disk groups, but this term is specific to Flex ASM/Redundancy levels and not a general installation requirement for standard disk groups.
Expert Analysis
Why the Answer Is Correct
Option B is correct because the Grid Infrastructure installer provides options to create a new disk group specifically designated for the Fast Recovery Area (FRA) or archive logs during the initial setup phase. Option E is correct as the installer explicitly handles the creation of the disk group that will house the OCR and Voting Files, which are critical for Clusterware operation.
Why the Other Options Are Wrong
Option A is incorrect; using ASM for Clusterware files does not mandate its use for all databases, as non-ASM storage (like NFS or local filesystems) can still be used for individual databases. Option C is incorrect because an ASM instance can start and function without any disk groups being present at boot time; it simply won't have storage until one is created. Option D is incorrect because the term 'quorum failgroup' is associated with Flex ASM and specific redundancy configurations (like Normal/High Redundancy in Flex Mode), not a universal requirement for all voting disk groups created during standard GI installation.
Community Comment Notes
As Tunglinfo9 noted, the concept of quorum failgroups applies to specific redundancy scenarios rather than being a blanket requirement for all voting disk groups. User 217972f correctly pointed out that the statement about the Recovery Area might be poorly transcribed but remains valid in the context of what the installer permits creating. Another user lcoleandro confirmed that A, C, and D are incorrect based on standard ASM behavior and flexibility.
Official Reference
This link opens the official vendor documentation in a new tab.
Exam Strategy
When analyzing installation steps, focus on what the installer 'permits' doing versus what is strictly mandatory for operation. Distinguish between Clusterware-specific storage requirements and general database storage options.
Frequently Asked Questions
Why is option D considered incorrect?
Can ASM instances start without disk groups?
Community Votes
67% of anonymous learners picked answer BE. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 3 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 3
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Tunglinfo9 👍 1D: "ASM disk groups used for voting files and OCR files require a quorum failgroup." This statement is correct. Disk groups that contain Oracle Clusterware files (OCR and voting files) have a higher minimum number of failure groups than other disk groups because the voting files are stored in quorum failure groups. A quorum failure group ensures that a quorum of the specified failure groups are available and is used to determine if the disk group can be mounted if there is a loss of one or more failure groups. E: The Installer permits the creation of a disk group for use by the voting disks and OCR file is true. The Oracle Universal Installer can be used to install Oracle Clusterware, which can put the Oracle Cluster Registry (OCR) and the voting files on Oracle Automatic Storage Management (Oracle ASM). The installer provides the option to automatically mirror OCR. Also, the Grid Infrastructure Management Repository can be created in its own disk group during installation of Oracle Grid Infrastructure.
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lcoleandro 👍 1A. Incorrect: Databases can use other storage options independently of ASM being used for Clusterware files. B. Correct: The Installer allows creating a disk group for the Recovery Area during installation. C. Incorrect: ASM instances can still be started without specifying ASM disk groups during installation. D. Incorrect: ASM requires redundancy but does not specifically require a "quorum failgroup." E. Correct: The Installer allows creating a disk group for voting disks and OCR files during installation.
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217972f 👍 1B but NOT for ASM Instance. ASM Instance can't be in archivelog mode, so recovery area isn't needed. I think this answer is badly transcribed. A database can use ASM or shared storage independently C incorrect, ASM diskgroup can be created for the first time after ASM startup D quorum failgroup is required for voting diskgroup with normal or high redundancy
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