The correct order of steps to create a mount on a backup server and copy a test file to a

PowerProtect DD appliance over NFS is as follows:

Create the NFS directory (mount point).

Create a backup directory on the backup server.

Mount the PowerProtect DD directory or MTree on the new mount point.

Create and copy a file from the backup server to the PowerProtect DD appliance to validate

functionality.

Create the NFS Directory (Mount Point): The first step is to set up the NFS directory or mount point

on the backup server. This directory will serve as the destination where the PowerProtect DD

appliance will be mounted.

Create a Backup Directory on the Backup Server: Once the mount point is ready, create a dedicated

directory on the backup server to store backups. This directory structure helps organize data and

ensures backups are written to the correct location.

Mount the PowerProtect DD Directory or MTree on the New Mount Point: Use the NFS protocol to

mount the specified PowerProtect DD directory (or MTree) onto the created mount point. This step

establishes the connection between the backup server and the PowerProtect DD appliance.

Create and Copy a File from the Backup Server to the PowerProtect DD Appliance to Validate

Functionality: Finally, to confirm that the mount is correctly configured and functional, create a test

file on the backup server and copy it to the PowerProtect DD appliance. This test ensures that the

server can write data to the appliance over the NFS mount.

This ordered sequence ensures a successful setup of the mount and verifies the connectivity and

functionality of the NFS configuration on the PowerProtect DD system.

The correct order of operations for the Data Invulnerability Architecture (DIA) elements is as follows:

Fault Avoidance and Containment

Continuous Fault Detection and Self-Healing

Inline Data Verification

Recovery/Access and Verification

The Data Invulnerability Architecture (DIA) in Dell PowerProtect DD systems is designed to ensure

data integrity and resiliency throughout the data storage process. Here’s how each element plays a

role in this ordered sequence:

Fault Avoidance and Containment: This is the first layer of protection. DIA focuses on preventing

faults before they occur and containing any potential issues, ensuring that faults do not propagate

within the system. This stage is critical as it forms the foundational protection layer.

Continuous Fault Detection and Self-Healing: After implementing containment, the system

continuously monitors for faults. It actively identifies and mitigates issues through self-healing

mechanisms, addressing any detected errors autonomously to maintain data integrity.

Inline Data Verification: As data is written to storage, the inline data verification checks data integrity

on the fly. This step ensures that any corruption or errors in data are detected immediately, enabling

early intervention before data is permanently stored.

Recovery/Access and Verification: The final step ensures that, during data recovery, the integrity of

the data is verified before it is accessed or restored. This stage completes the DIA cycle by confirming

that data retrieved from storage is accurate and intact.

This ordered approach in DIA is designed to provide robust protection against data loss or corruption,

making Dell PowerProtect DD appliances highly reliable for data protection needs.

In a DD Boost-enabled environment, the storage node manages the backup devices, such as disk or

tape devices, that are used for storing backup data. DD Boost distributes some of the deduplication

processing to the backup server or storage node, helping to optimize performance. The storage node

handles the communication with the backup devices and ensures that the backup data is efficiently

stored.

DD Retention Lock enforces data immutability, ensuring that critical data cannot be altered or

deleted until its retention period expires. This feature is essential for regulatory compliance and data

integrity in long-term storage.

By enabling Smart Scale services from DDMC, the Smart Scale architecture pools together a set of

DD series appliances into a group under the data center in which they are coordinated with each

other for space balancing. Smart Scale supports up to 32 systems in a system pool and four system

pools in a data center.