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NEW QUESTION # 60
A customer with an X50R2 array connected to 110V power is due for an upgrade to the latest controller generation.
What is required to allow this upgrade to proceed?
Answer: C
Explanation:
As Pure Storage has iterated through FlashArray generations (moving from //X R2 to R3, R4, and beyond), the power density and performance capabilities of the controllers have increased significantly. Modern high-performance controllers, such as those found in the //X R4 or //XL series, have strict power requirements that often exceed what a standard 110V/120V (Low-Line) circuit can provide.
To support the higher wattage and current draw of modern CPUs and NVRAM modules, Pure Storage requires 200-240V (High-Line) power for its latest generation controllers. If an existing array is currently running on 110V power, it must be migrated to 220V power outlets before the upgrade can proceed. Attempting to run newer, high-spec controllers on 110V power could lead to power supply instability, insufficient cooling performance, or the controllers failing to boot entirely.
Here is why the other options are incorrect:
Call support to schedule a power supply replacement (A): The issue is not a faulty power supply; it is the external electrical infrastructure's inability to provide the necessary voltage/wattage for the new hardware. Replacing the power supply with the same model would not solve the voltage limitation.
Transition the array to DC power (B): While Pure Storage does offer DC power options for specific telco environments, this is not a standard requirement for a typical controller upgrade. Moving to standard high-line AC power (220V) is the standard prerequisite for data center environments.
NEW QUESTION # 61
How should an administrator configure initiator-to-target connections for zones with multiple initiators?
Answer: A
Explanation:
Zoning Best Practices: In a Fibre Channel SAN environment, zoning is used to partition the fabric to ensure that initiators (hosts) can only see the targets (FlashArray ports) they are intended to communicate with.
The "Single Initiator" Rule: Pure Storage, following industry-standard SAN best practices (and Cisco/Brocade recommendations), strongly advises using Single Initiator Zoning. This means each zone should contain exactly one initiator (HBA port) and one or more targets (FlashArray ports).
Why Single Initiator to Multiple Targets (Option B)?:
Isolation: This prevents "Initiator-to-Initiator" communication. If multiple initiators are in the same zone, they may attempt to communicate with or probe each other (Registered State Change Notifications - RSCNs), which can cause host instability, driver timeouts, or discovery issues.
Troubleshooting: It simplifies troubleshooting. If a port is experiencing CRC errors or flapping, the impact is isolated to that specific host's zone rather than affecting a broad "group" zone.
Efficiency: When a target port changes state (e.g., during a controller reboot), the switch sends an RSCN. In a single-initiator zone, only that specific host is notified. In a multi-initiator zone, every host in the zone is interrupted to process the notification, even if they aren't using the port that changed.
Target Selection: While the zone should have only one initiator, it can (and should) include multiple target ports from the FlashArray (usually one port from CT0 and one from CT1 for the same fabric) to provide path redundancy and allow the host's MPIO software to manage failover.
NEW QUESTION # 62
An administrator is running commands to verify NVME/TCP connectivity from the hosts to the FlashArray. They use the command ping -M do -s 8972 <ip_addr> from the initiator and it fails.
What should the administrator do to resolve the issue?
Answer: A
Explanation:
When configuring NVMe/TCP (or iSCSI) for optimal performance on a Pure Storage FlashArray, configuring Jumbo Frames (an MTU of 9000) end-to-end is a standard best practice.
The command ping -M do -s 8972 <ip_addr> is specifically used to verify Jumbo Frame configuration across the network.
The -M do flag sets the "Do Not Fragment" (DF) bit, meaning the network is not allowed to break the packet into smaller pieces.
The -s 8972 flag sets the ICMP data payload to 8972 bytes. When you add the standard 8-byte ICMP header and the 20-byte IP header, the total packet size equals exactly 9000 bytes.
If this ping command fails, it indicates that somewhere along the network path between the host (initiator) and the FlashArray (target), a switch port, router, or network interface is not configured to support an MTU of 9000. The packet is being dropped because it is too large and cannot be fragmented. The administrator must verify the MTU settings on every network hop (switches, routers, and host NICs) to resolve the issue.
Here is why the other options are incorrect:
Engage support to enable NVME/ TCP services (A): The failure of a Jumbo Frame ping test is a Layer 2/Layer 3 network configuration issue, not an indicator that the NVMe/TCP storage protocol service is disabled on the array.
Run the command from the target (C): While pinging from the FlashArray back to the host is a valid secondary troubleshooting step, it will likely also fail if the network path doesn't support Jumbo Frames. The actual resolution is to fix the MTU on the network hops.
NEW QUESTION # 63
What is the proper configuration method to connect a volume to multiple hosts?
Answer: A
Explanation:
In Pure Storage Purity OS, the absolute best practice and proper configuration method for sharing a single volume across multiple hosts-such as a VMware ESXi cluster or a Microsoft Windows Server Failover Cluster (WSFC)-is to connect the volume to a Host Group.
When you create a Host Group, you add the individual Host objects (which contain the WWPNs, IQNs, or NQNs) into that group. When a volume is then connected to the Host Group, Purity automatically ensures that the volume is presented to every host in that group using the exact same LUN ID. Consistent LUN IDs across all nodes in a cluster are a strict requirement for clustered file systems like VMFS and Cluster Shared Volumes (CSV) to function correctly and prevent data corruption.
Here is why the other options are incorrect:
Connect the volume to each individual host (C): This is known as creating "private connections." If you manually connect a shared volume to multiple hosts individually, Purity might assign a different LUN ID to the volume for each host. Inconsistent LUN IDs will cause clustered operating systems to fail to recognize the disk as a shared resource. Private connections should only be used for boot LUNs or standalone standalone servers.
Connect a volume group to the host (B): In Purity, a "Volume Group" is a logical container used for applying consistent snapshot policies, replication schedules, or ActiveCluster configurations to a set of related volumes (like a database and its log files). Volume groups are not used for host presentation or access control.
NEW QUESTION # 64
During testing of an NFS share, the administrator notes that they are able to mount the share as root but are not able to access files as root.
Where is the incorrect setting causing the issue located?
Answer: B
Explanation:
The Concept of Root Squash: In the world of NFS, "Root Squashing" is a fundamental security feature. By default, most modern storage systems (including FlashArray File Services) do not trust the "root" user of a remote client. This prevents a user with administrative access on a random laptop or server from gaining full administrative control over the files on the central storage.
Mounting vs. Accessing:
Mounting: This is the process of attaching the remote export to the local file system. If the Export Policy allows the client IP to connect, the mount will succeed.
Accessing: Once mounted, the array evaluates the identity of the user. If Root Squash is enabled, the array "squashes" the root user (UID 0) and maps it to a non-privileged user (usually nobody or anonymous). Consequently, the client's root user loses their administrative permissions when trying to read/write files.
The Export Policy Setting: The behavior described (able to mount but permission denied for files as root) is almost always caused by the User ID Mapping or Access rules within the Export Policy.
To resolve this, an administrator must edit the specific rule in the Export Policy and enable "No Root Squash" (or change the mapping to allow root access). This tells the FlashArray to honor the client's root identity.
Why Options A and B are incorrect:
Managed Directory: This is where you set the directory structure and quotas, but it doesn't control the protocol-level identity mapping.
File System: While a file system has underlying permissions, if the mount is successful but specifically blocks the root user, the "gatekeeper" is the Export Policy rule.
NEW QUESTION # 65
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