There are two descriptions about backups, the correct ones are: Description 1: The disaster recovery solution does not need to consider whether it is…

The choice of backup media, such as tape or hard disk, is a critical component of a disaster recovery (DR) solution. This decision directly influences key metrics like Recovery Time Objective (RTO) and Recovery Point Objective (RPO), as well as overall cost and data retention capabilities. Disk-based backups typically offer faster recovery, while tape is often preferred for long-term, low-cost, off-site archival. Therefore, a DR solution must consider the media type.

Conversely, a robust backup and DR plan must be designed by considering the worst-case scenario. This ensures the organization can recover from the most severe potential disruptions, such as a complete data center failure, thereby guaranteeing business continuity.

A. Description 1 is incorrect; the choice of backup media is a crucial element of any DR plan.

B. This option incorrectly states that Description 1 is right and Description 2 is wrong, which is the opposite of the correct assessment.

D. Description 2 is a correct and fundamental principle of disaster recovery and business continuity planning.

1. Huawei HCIA-Storage V5.0 Training Material. In the "Backup and Disaster Recovery Solution" chapter

Section 2

"Backup Solution

" details different backup networking modes and media types (e.g.

disk

Virtual Tape Library - VTL

physical tape). The material implicitly confirms that media selection is a core design choice affecting performance and use case

making it a necessary consideration for any DR plan.

2. Carnegie Mellon University

Software Engineering Institute. The CERT Resiliency Engineering Framework emphasizes that a key activity in ensuring continuity is to "Identify and analyze potential disruptions

" which includes planning for worst-case scenarios to ensure services can be maintained. (See CERT-RMM v1.2

Process Area: Risk Management

Specific Goal 1).

3. University of California

Berkeley

Information Security Office. In its guidance on "Disaster Recovery Planning

" it states

"A DR plan should outline how to prepare for a disaster

what to do during a disaster

and what to do after a disaster... It should be based on a worst-case scenario." This confirms that planning for the worst case is a standard and required practice. (See Berkeley Security

"Disaster Recovery Planning" documentation).