SG0-001 · Question #187
A database administrator has declared that a database for the Finance department can never age- off its data, even though old data may only be accessed for billing disputes in the future. The storage
The correct answer is C. HSM. The described scenario of moving rarely accessed, older data to slower, less expensive storage tiers while retaining it indefinitely is a core function of Hierarchical Storage Management (HSM).
Question
A database administrator has declared that a database for the Finance department can never age- off its data, even though old data may only be accessed for billing disputes in the future. The storage administrator does not need to use high performance disk to store this old data and chooses to place the database into a multi-tiered group of disks. The array can then move rarely accessed data between tiers as needed. This is called which of the following?
Options
- AVTL
- BLVM
- CHSM
- DCAS
How the community answered
(24 responses)- B4% (1)
- C92% (22)
- D4% (1)
Why each option
The described scenario of moving rarely accessed, older data to slower, less expensive storage tiers while retaining it indefinitely is a core function of Hierarchical Storage Management (HSM).
VTL (Virtual Tape Library) emulates tape drives and libraries on disk storage, primarily for backup purposes, and does not involve automatic tiering of live data based on access patterns.
LVM (Logical Volume Management) provides a way to manage disk space more flexibly than traditional partitioning, allowing for resizing and combining volumes, but it does not perform data tiering based on access.
Hierarchical Storage Management (HSM) is a data storage strategy that automatically moves data between different storage tiers based on access patterns and data age. It ensures that frequently accessed data resides on faster storage, while infrequently accessed or older data is migrated to less expensive, slower storage, balancing performance and cost. This allows for indefinite data retention without requiring high-performance storage for all data.
CAS (Content-Addressable Storage) is a method of storing data where the data is retrieved based on its content (hash value) rather than its physical location, typically used for fixed content retention and integrity, not dynamic tiering.
Concept tested: Hierarchical Storage Management (HSM)
Source: https://learn.microsoft.com/en-us/azure/storage/blobs/access-tiers-overview
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