Explain PowerScale Filesystem Structure POWERSCALE-DESIGN-V2 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   How does copy-on-write (COW) support snapshots in the PowerScale filesystem?

   • AIt creates a full copy of the entire filesystem for each snapshot.
   • BIt preserves the original data blocks when a file is modified, so the snapshot retains the old version.
   • CIt stores snapshots in a separate filesystem on a different node.
   • DIt prevents any writes to files that have snapshots.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   After an unexpected power failure, what does the PowerScale filesystem use to restore consistency?

   • AThe superblock, which stores the last known good state.
   • BA full backup of the filesystem taken at the last scheduled time.
   • CThe inode table, which is always kept up to date.
   • DThe journal, which contains a record of pending filesystem changes.
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A media company is designing a PowerScale cluster to store millions of small video assets. They are concerned about the overhead of storing many small files and want to understand how the filesystem will manage the metadata for these files. Which aspect of the PowerScale filesystem structure is most relevant to this concern?

   • AEach file is represented by an inode that contains pointers to data blocks, and metadata is stored separately from file data.
   • BThe root directory is replicated on every node to ensure fast lookup of all files.
   • CAll metadata is stored in a single centralized database on the first node to simplify management.
   • DSmall files are stored entirely within the inode to eliminate the need for data blocks.
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5. 19foundation · easy

   How does the PowerScale filesystem distribute data and metadata across multiple nodes in a cluster?

   • AIt spreads data and metadata across all nodes using a distributed algorithm, allowing the cluster to scale as nodes are added.
   • BIt stores all metadata on a single dedicated node to simplify management.
   • CIt uses a central index server to track all file locations.
   • DIt keeps all data on the node where the file was created.
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   In the PowerScale filesystem hierarchy, what is the role of the root directory?

   • AIt is a mount point that connects the filesystem to a specific node in the cluster.
   • BIt is the top-level directory that contains all other directories and files in the filesystem.
   • CIt is a special file that stores the filesystem's journaling data.
   • DIt is a reserved area that holds the filesystem's superblock and inode table.
   Reveal Solution Discussion Select an answer first