Explain PowerScale Filesystem Structure POWERSCALE-DESIGN-V2 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   In the PowerScale filesystem, which structure is the primary container that holds file data and metadata for a single file?

   • AInode
   • BDirectory entry
   • CBlock group
   • DSuperblock
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2. 22application · medium

   A financial services firm is deploying a PowerScale cluster for a high-performance trading application. The application performs frequent small writes to many files and requires low-latency metadata operations. The architects want to ensure that metadata operations do not become a bottleneck as the cluster scales. How does PowerScale's separation of data and metadata help meet this requirement?

   • AMetadata is distributed across all nodes in the cluster, allowing metadata operations to scale with the number of nodes.
   • BMetadata and data are stored together in the same blocks to reduce I/O operations and improve performance.
   • CMetadata is cached in a centralized in-memory cache on the primary node to provide fast access.
   • DMetadata is stored on a dedicated set of SSDs on each node, while data is stored on HDDs, ensuring fast metadata access.
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4. 23expert · hard

   A PowerScale administrator is troubleshooting a filesystem that has been running for several years. They suspect there may be latent corruption that has not been detected by journaling. They want to perform a thorough integrity check without causing significant downtime. Which approach is most appropriate?

   • ARun fsck in repair mode immediately to fix any potential issues.
   • BRun fsck in read-only mode during a maintenance window to identify any issues without making changes.
   • CUse snapshots to restore the filesystem to a known good state.
   • DRely on the journal to automatically repair any corruption.
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5. 24application · medium

   A storage administrator is explaining to a colleague how PowerScale handles large files. The colleague asks how the filesystem locates all the data blocks for a file that is several gigabytes in size. Which statement accurately describes the mechanism?

   • AThe inode contains pointers to indirect blocks, which in turn point to data blocks.
   • BThe file's data blocks are stored contiguously and the inode stores the starting block and length.
   • CThe inode contains a direct pointer to every data block in the file.
   • DThe filesystem scans the entire disk to find all blocks belonging to the file.
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6. 25application · medium

   A growing company is expanding its PowerScale cluster from 3 nodes to 9 nodes to handle increased storage demand. They expect performance to scale accordingly. Which characteristic of the PowerScale filesystem allows both capacity and performance to scale as nodes are added?

   • AData and metadata are distributed across all nodes in the cluster.
   • BEach node operates independently with its own filesystem, and the cluster merges them at the top level.
   • CThe filesystem automatically migrates all data to the new nodes to balance load.
   • DAll metadata is stored on a dedicated metadata node that is upgraded as the cluster grows.
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