Which two statements are true about the Oracle Direct Network File system (DNFS)?

Question

Options

• AIt utilizes the OS file system cache.
• BA traditional NFS mount is not required when using Direct NFS.
• COracle Disk Manager can manage NFS on its own, without using the operating kernel NFS driver.
• DDirect NFS is available only in UNIX platforms.
• EDirect NFS can load-balance I/O traffic across multiple network adapters.

• B
  3% (1)
• C
  93% (27)
• D
  3% (1)

Explanation

E: Performance is improved by load balancing across multiple network interfaces (if available). * To enable Direct NFS Client, you must replace the standard Oracle Disk Manager (ODM) library with one that supports Direct NFS Client. Not A: Direct NFS Client is capable of performing concurrent direct I/O, which bypasses any operating system level caches and eliminates any operating system write-ordering locks * To use Direct NFS Client, the NFS file systems must first be mounted and available over regular * Oracle Direct NFS (dNFS) is an optimized NFS (Network File System) client that provides faster and more scalable access to NFS storage located on NAS storage devices (accessible over Not D: Direct NFS is provided as part of the database kernel, and is thus available on all supported database platforms - even those that don't support NFS natively, like Windows. * Oracle Direct NFS (dNFS) is an optimized NFS (Network File System) client that provides faster and more scalable access to NFS storage located on NAS storage devices (accessible over TCP/IP). Direct NFS is built directly into the database kernel - just like ASM which is mainly used when using DAS or SAN storage. * Oracle Direct NFS (dNFS) is an internal I/O layer that provides faster access to large NFS files than traditional NFS clients.

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