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Which PowerFlex software allows the cluster to make data available over NAS"
FSN, or File Storage Network, is the component within the PowerFlex software suite that enables data availability over NAS (Network Attached Storage).It is designed to integrate file services into the PowerFlex system, allowing for the management of file shares alongside block storage within the same infrastructure1.
The FSN component provides the necessary functionality to create, manage, and serve file systems over the network, making it possible for clients to access shared files and directories as if they were local.This integration simplifies the storage architecture and provides a unified storage solution for both block and file data requirements1.
The other options listed, such as SDR (Storage Data Replicator), LIA (Log Integration Adapter), and SDT (Software-Defined Technology), do not specifically relate to the provision of NAS services within the PowerFlex environment. Therefore, the correct answer is A. FSN, as it is the PowerFlex software component responsible for enabling NAS capabilities within the cluster.
An administrator wants to delete a secure snapshot that was created 30 days ago and has a 60-day expiration period The snapshot was created by a snapshot policy and lock is enabled How can the administrator delete the snapshot?
Secure snapshots in PowerFlex are controlled by policies that define their retention and expiration periods. If a snapshot has a lock enabled, it cannot be deleted until the lock is disabled. The lock is a security feature that prevents accidental or unauthorized deletion of the snapshot before its intended retention period1.
To delete a secure snapshot that is still within its expiration period but needs to be removed, the administrator must first disable the snapshot policy lock. Here are the general steps to do so:
Access PowerFlex Manager.
Navigate to the Snapshots section.
Locate the specific snapshot that needs to be deleted.
Disable the lock on the snapshot policy associated with the snapshot.
Once the lock is disabled, the snapshot can be deleted manually.
Changing the snapshot expiration period to 30 days (Option C) would not affect the ability to delete the snapshot if the lock is still enabled. The Dual Signature Policy agreement with Dell (Option A) is not a standard procedure for deleting snapshots within PowerFlex and is not related to the administrative controls of snapshot policies.
Therefore, the correct answer is B. Disable the snapshot policy lock on the snapshot, as this action will allow the administrator to delete the snapshot before the expiration period, provided that the snapshot is no longer needed and can be safely removed from the system1.
An administrator is using SCLI commands to monitor the cluster
On which MDM are the commands performed?
In a PowerFlex system, the SCLI (ScaleIO Command Line Interface) commands are typically performed on the Primary MDM (Metadata Manager). The Primary MDM is responsible for the overall management and operation of the cluster, including configuration changes and monitoring1. It is the authoritative source for metadata and cluster configuration, making it the primary point of interaction for administrative tasks.
The Tie-breaker and Standby MDMs serve as part of the high availability setup. The Tie-breaker MDM is used to avoid split-brain scenarios, and the Standby MDM is a backup that can take over the role of the Primary MDM if it fails. The Secondary MDM works in conjunction with the Primary MDM to manage the cluster but does not serve as the main point for executing SCLI commands.
Therefore, the correct answer is C. Primary, as it is the MDM where SCLI commands are executed for monitoring and managing the PowerFlex cluster.
Which two aspects must be in place before adding a Fault Set? (Select 2)
Before adding a Fault Set in PowerFlex, two critical aspects must be in place: a Protection Domain and Storage Pools.
Protection Domain: This is a logical grouping of storage resources that share the same protection policy and fault tolerance settings. It defines the boundaries of failure domains and is essential for ensuring data availability and resilience1.
Storage Pools: These are collections of storage media across multiple nodes within a Protection Domain. Storage Pools provide the physical storage where data is actually placed. They are necessary for the creation of volumes and for the distribution of data across the system1.
Fault Sets are used to group nodes that share a common risk of failure, such as being in the same rack or power circuit. When creating Fault Sets, it's important that they are defined within an existing Protection Domain and utilize the storage resources allocated within Storage Pools. This ensures that data remains available and protected even if a Fault Set fails, as the system can rebuild the data using the remaining Fault Sets and Storage Pools1.
The information provided here is based on the best practices and design principles outlined in Dell PowerFlex documentation, which details the requirements for setting up and configuring various components of the PowerFlex system, including Fault Sets1.
An engineer must permanently remove a node from a 10-node PowerFlex system The node is the primary MDM. What must they do before they remove the node to avoid errors and maintain availability'
Before permanently removing a node that is the primary MDM from a PowerFlex system, it is crucial to ensure that the MDM roles are reconfigured to maintain cluster availability and avoid errors. This process involves promoting another node to take over the primary MDM role and ensuring that the cluster continues to function correctly without the node that is being removed.
The steps to reconfigure MDM roles using PowerFlex Manager are as follows:
Log in to PowerFlex Manager.
Navigate to the MDM cluster settings.
Identify a suitable node that can be promoted to the primary MDM role.
Use the PowerFlex Manager interface to promote the selected node to the primary MDM role.
Ensure that the cluster is stable and that the new primary MDM is functioning correctly.
Once the new primary MDM is in place and operational, the original primary MDM node can be safely removed from the cluster.
This process is essential to prevent any disruptions in the management and operation of the PowerFlex system. The other options listed, such as using the remove_standby_mdm SCLI command (Option A) or the switch_cluster_mode SCLI command (Option B), do not directly address the reconfiguration of MDM roles. Deactivating the Protection Domain (Option D) is not related to the removal of an MDM node and would not be a recommended step in this scenario.
Therefore, the correct answer is C. Use PowerFlex Manager to reconfigure MDM roles, as it ensures that the MDM responsibilities are transferred to another node before the primary MDM node is removed, thus maintaining the integrity and availability of the PowerFlex system1.
