SK0-004 · Question #823
An administrator is working to improve the speed at which archived data can be accessed. This data is currently stored on DLT and is accessed for random searches. Which of the following methods…
The correct answer is B. Migrate the data from DLT to an optical device. When migrating archived data for faster random access, optical media supports direct random addressing unlike sequential tape formats, making it faster for non-linear retrieval than DLT or LTO.
Question
An administrator is working to improve the speed at which archived data can be accessed. This data is currently stored on DLT and is accessed for random searches. Which of the following methods would provide the FASTEST access to the data?
Options
- AMigrate the data from DLT to LTO tape
- BMigrate the data from DLT to an optical device
- CMigrate the data from DLT to a tape library
- DMigrate the data from DLT to a SAN volume
How the community answered
(35 responses)- A9% (3)
- B83% (29)
- C6% (2)
- D3% (1)
Why each option
When migrating archived data for faster random access, optical media supports direct random addressing unlike sequential tape formats, making it faster for non-linear retrieval than DLT or LTO.
LTO tape, like DLT, is a sequential-access medium and does not improve random-access speed over DLT.
Optical media such as optical disk libraries allows random access reads by addressing any sector directly on the disc surface. Unlike tape formats (DLT, LTO), optical does not require sequential rewinding or fast-forwarding to locate data, significantly reducing seek time for random searches across archived data.
A tape library automates cartridge handling but still relies on sequential-access tape media, so random search speed is not fundamentally improved.
While a SAN volume would offer high performance, the question context focuses on archived data migration scenarios where optical is the recognized step-up from tape for random access in this exam objective.
Concept tested: Storage media types and random access performance
Source: https://www.comptia.org/certifications/server
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