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SG0-001 · Question #165

Which of the following would BEST help to reduce Recovery Time Objectives (RTO) of data restoration from long-term archive?

The correct answer is B. VTL. Virtual Tape Libraries (VTLs) improve Recovery Time Objectives (RTO) for long-term archive data restoration by using disk-based storage that emulates tape, providing faster access than physical tapes.

Storage Functionality

Question

Which of the following would BEST help to reduce Recovery Time Objectives (RTO) of data restoration from long-term archive?

Options

  • AVSAN
  • BVTL
  • CATL
  • DLVM

How the community answered

(53 responses)
  • B
    94% (50)
  • C
    2% (1)
  • D
    4% (2)

Why each option

Virtual Tape Libraries (VTLs) improve Recovery Time Objectives (RTO) for long-term archive data restoration by using disk-based storage that emulates tape, providing faster access than physical tapes.

AVSAN

A VSAN (Virtual Storage Area Network) segments a Fibre Channel SAN into multiple logical SANs, which improves security and management but does not directly reduce RTO for data restoration from archives.

BVTLCorrect

A Virtual Tape Library (VTL) stores backup data on disk but emulates a physical tape library, providing disk-like access speeds for restores while retaining compatibility with existing tape backup software for long-term archiving, thus significantly reducing RTO compared to physical tape.

CATL

An ATL (Automated Tape Library) is a physical device that automates the handling of tape cartridges, which is faster than manual handling but still relies on the inherent slowness of tape for restores, making it less effective for RTO reduction than VTL.

DLVM

LVM (Logical Volume Manager) manages disk space on a single server, allowing for flexible partitioning and resizing, but it is not directly related to reducing RTO for long-term archive data restoration across a network.

Concept tested: RTO reduction for archived data using VTL

Source: https://learn.microsoft.com/en-us/azure/storsimple/storsimple-virtual-tape-library-overview

Topics

#RTO#Virtual Tape Library#Data restoration#Archive storage

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