Which are two correct statements about backing up Exadata Database Machine?

Question

Options

• ABackup of the Oracle Cluster Registry, which also contains Voting Disk information, is
• BBacking up Exadata Storage Server Software is critical for restoration.
• CFor high availability, system area can be on the first two disks and M.2 devices.
• DThe M.2 disk is hot pluggable and can be replaced when the power is on, but you will have to
• EUse a snapshot-based backup of an Oracle Exadata Database Machine database server software.

• A
  88% (23)
• C
  8% (2)
• E
  4% (1)

Explanation

Options A and B are correct because they accurately describe two critical components of Exadata backup strategy. The Oracle Cluster Registry (OCR) - which in modern RAC environments also stores Voting Disk information - must be backed up to protect cluster configuration and quorum data. Similarly, backing up the Exadata Storage Server Software (cell software) is essential: if a storage cell must be rebuilt, having that software backup is necessary to restore full functionality.

Option C is wrong because M.2 devices serve as the OS/system boot media in Exadata, but the claim about placing the system area on "the first two disks and M.2 devices" for high availability misrepresents how Exadata's HA architecture actually works for system storage.

Option D is wrong because M.2 disks in Exadata are not hot-pluggable - the system must be powered down before replacing them, making this statement false regardless of how the sentence ends.

Option E is wrong because snapshot-based backups are not the Oracle-recommended method for Exadata database server software. Oracle prescribes specific procedures (RMAN for databases, cell-level tools for storage software) rather than generic snapshots.

Memory tip: Think "OCR and Cell Software - the two pillars of Exadata backup." Everything else (M.2 behavior, snapshot methods) describes either non-standard approaches or hardware misconceptions. If a choice makes M.2 sound flexible or snapshots sound official for Exadata, eliminate it.

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