Pass the EMC DCA-ISM D-ISM-FN-23 Questions and answers with ExamsMirror

In an Object-based Storage Device (OSD) system, the metadata service plays a crucial role by generating a unique object ID for each piece of data to be stored. This ID is used to manage and retrieve the data objects. The metadata service also keeps track of the attributes and locations of objects, enabling efficient data access and management within the storage system.

References:

Dell EMC Education Services (https://education.dell.com/content/emc/en-us/home/certification-overview/find-exam/ismv41.html )

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A passive attack in IT security involves unauthorized monitoring and gaining access to data without altering it. This type of attack is often used for data gathering and eavesdropping, where the attacker gains access to sensitive information without modifying or disrupting the system’s operations.

References:

Dell EMC Information Storage and Management V5, Module: Security in Storage

The exhibit shows the architecture of a NAS (Network Attached Storage) system that processes file I/O operations. Both scale-up and integrated NAS systems can process file write and read operations as described. Scale-up NAS systems add storage capacity by adding more storage to existing nodes, while integrated NAS systems combine the NAS head and storage into a single unit.

References:

Dell EMC Information Storage and Management V5 course material, Module on Networked Storage - NAS.

REST (Representational State Transfer) is an architectural style that supports the development of scalable and lightweight web applications. It is based on a resource-oriented architecture and adheres to a set of constraints such as stateless communication and the use of standard HTTP methods. RESTful APIs are widely used in Software-Defined Storage (SDS) environments to interact with and manage storage resources efficiently.References: Dell Information Storage and Management V5, Software-Defined Storage,Dell Certification Resource

Graphical user interface, application Description automatically generated

FCIP (Fibre Channel over IP) encapsulates Fibre Channel frames into IP packets, allowing them to be transported over IP networks. This tunneling technique enables the extension of Fibre Channel SANs over long distances using existing IP infrastructure, facilitating connectivity between geographically dispersed SANs.References:

Dell EMC Information Storage and Management V5, Module on SAN and FCIP

In Fibre Channel (FC) zoning, there are different types of zones that can be implemented:

Port zoning: Zones are created based on the physical ports on the FC switch.

WWN zoning: Zones are created based on the World Wide Names (WWNs) of the devices.

Mixed zoning: Zones can be created using a combination of both port numbers and WWNs.

Referring to the provided exhibit:

Zone1: Mixed (since it includes both port and WWN)

Zone2: WWN (since it only uses WWN for zoning)

Zone3: Port (since it uses ports for zoning)

References:

Dell EMC Information Storage and Management V5 documentation.

Dell Certification Overview

RAID 6 Array: RAID 6 uses double parity for data protection, which means two disks' worth of capacity is used for parity information.

Capacity Calculation: In a RAID 6 array with four disks, each 200 GB, the usable data storage capacity is calculated as follows:Total Disk Capacity=4×200 GB=800 GBTotal Disk Capacity=4×200 GB=800 GBUsable Capacity=Total Disk Capacity−Parity Disk Capacity=800 GB−2×200 GB=400 GBUsable Capacity=Total Disk Capacity−Parity Disk Capacity=800 GB−2×200 GB=400 GB

References: Dell ISM V5 Course, Module on RAID Configurations and Data Protection.

Target-based deduplication is recommended when there are concerns about application server performance and long backup windows. In this approach, deduplication is performed on the target storage system, offloading the deduplication process from the application servers. This minimizes the impact on server performance and reduces the backup window. Additionally, target-based deduplication allows organizations to retain their existing backup applications without significant modifications.

References:

Dell Information Storage and Management V5 course materials, section on deduplication

Dell EMC documentation on target-based deduplication

The backup server is responsible for managing the backup operations, including sending metadata and tracking information about each backup to the system that maintains this information. This centralized management ensures that backup processes are monitored, and data integrity is maintained.

References:

Dell EMC Information Storage and Management V5, Module: Backup and Recovery