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NEW QUESTION # 61
An administrator is testing FA File Services configurations and unintentionally disabled User Mapping on an active NFS Export.
What happens to file accessibility on that export?
Answer: A
Explanation:
User Mapping in FA File: On a Pure Storage FlashArray, User Mapping is the mechanism that translates identities between different protocols (like mapping a Windows SID to a Unix UID/GID) or between an external directory service (like Active Directory or LDAP) and the local file system permissions.
The Impact of Disabling Mapping: When User Mapping is disabled on an active NFS export, the FlashArray can no longer resolve the identity of the user attempting to access existing files. Because NFS (specifically NFSv3 and NFSv4.1 supported by Pure) relies on these identifiers to verify file ownership and ACLs, existing files-which are tagged with specific owner IDs-become effectively "orphaned" from the perspective of the incoming request.
Access vs. Creation: * Existing Files: Accessibility is lost because the system cannot verify that the user has the rights to read or modify the file without the mapping logic.
New Files: Interestingly, in many "No Mapping" configurations, a user may still be able to create new files (often defaulting to a 'nobody' or 'anonymous' UID depending on the export rules), but they will immediately lose the ability to manage or access them once created because the mapping link is broken.
Real-time Application: Unlike some legacy storage systems that require a service restart, Purity applies export policy changes dynamically. As soon as the "User Mapping" toggle is disabled, the logic is removed from the data path, impacting active sessions immediately.
NEW QUESTION # 62
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: A
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 # 63
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 # 64
An administrator needs to enable Remote Assist (RA) on Purity version 6.8.4 to facilitate remote troubleshooting. Due to security restrictions, only certain commands can be executed on the array.
What type of access should the administrator grant when enabling RA?
Answer: B
Explanation:
Remote Assist (RA) Overview: Remote Assist is a secure, customer-initiated tunnel that allows Pure Storage Technical Support Engineers (TSEs) to log into a FlashArray to perform diagnostics and maintenance. It is disabled by default and must be explicitly opened by the customer.
Access Modes in Purity: In modern Purity versions (like 6.8.4), Pure Storage has introduced granular access controls for these support sessions to satisfy enterprise security and compliance requirements (such as SOC2 or HIPAA).
Restricted Access: This mode is specifically designed for high-security environments. When RA is enabled with the Restricted flag, the Support Engineer is limited to a pre-defined subset of non-destructive, read-only, or diagnostic commands. They cannot perform major configuration changes, delete data, or access sensitive metadata without further authorization.
Elevated vs. Secured: * Elevated access (often used during emergency recovery) provides the TSE with broader permissions, including the ability to run system-level scripts and configuration commands that go beyond standard diagnostics.
Secured is often a baseline state but does not imply the specific command-level filtering that "Restricted" does.
Security Best Practice: If a security team mandates that "only certain commands can be executed," Restricted is the correct administrative choice. This ensures that the principle of least privilege is applied even to the vendor's support staff.
NEW QUESTION # 65
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 # 66
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