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| Section | Objectives |
|---|---|
| Data Protection | - ActiveDR - SafeMode - Replication - Snapshots - ActiveCluster |
| Troubleshooting | - Incorrect Configuration - Alerts - Troubleshooting Resources - Port Identification and Configuration |
| Monitoring | - Meta Forecasting - Reporting from Pure1, Graphical User Interface (GUI), and Command Line Interface (CLI) - Pure1 Auditing and Alerts |
| FlashArray Administration | - FA File Services Configuration - Array Configuration and Management - Host Connections Configuration - Volume Configuration - Storage Concepts |
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NEW QUESTION # 53
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: B
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 # 54
How is SAN Time measured?
Answer: C
Explanation:
Understanding Total Latency: In a FlashArray environment, total latency as seen by the host application is the sum of several components. Pure Storage breaks this down into Array Time and SAN Time to help administrators pinpoint where performance bottlenecks exist.
SAN Time Definition: SAN Time represents the latency introduced by the network infrastructure between the host (initiator) and the FlashArray (target). This includes the time spent traveling across Fibre Channel or Ethernet switches, cables, and host bus adapters (HBAs). It is calculated by taking the total round-trip time measured by the host and subtracting the time the FlashArray spent processing the I/O.
Metric Breakdown: * Array Time: The time the FlashArray takes to process the I/O once it hits the front-end ports (Option C describes internal array time).
SAN Time: The transit time for the request to reach the array and the response to return to the host (Option A).
Wait Time: In ActiveCluster environments, there is also "Mirror Latency," which is the time spent synchronizing data to a peer array (Option B).
Troubleshooting Value: If a user reports high latency but the FlashArray GUI shows very low Array Time, the administrator can look at the SAN Time metric. A high SAN Time indicates an issue with the fabric, such as a failing SFP, a congested switch port, or oversubscribed ISLs (Inter-Switch Links).
NEW QUESTION # 55
What FA File user authentication statement is correct?
Answer: B
Explanation:
Supported Directory Services: Pure Storage FlashArray File Services (FA File) is designed to integrate seamlessly into existing enterprise identity infrastructures. To manage file permissions (SMB ACLs and NFS POSIX/NFSv4 permissions), Purity supports joining the array to a directory service.
Active Directory (AD): This is the most common integration for FA File, specifically for SMB environments. Purity allows the array to join an AD Domain, creating a computer account and enabling the resolution of SIDs to usernames.
OpenLDAP: For Linux/Unix-heavy environments using NFS, Purity supports OpenLDAP. This allows the array to look up UID/GID information and group memberships to enforce security across the file system.
Authentication vs. Management: It is important to distinguish between Data Access (FA File) and Management Access (GUI/CLI login).
FA File (Data Access): Uses AD and OpenLDAP to authorize users accessing shares/exports.
Management (GUI/CLI): Uses SAML (Option C) or LDAP for Single Sign-On (SSO) (Option B) to allow administrators to log into the array.
The "Either/Or" Logic: While a FlashArray can be configured with multiple directory services, for a specific File System/Export mapping, the system relies on the primary identity provider configured-either Microsoft AD or an LDAP-compliant service like OpenLDAP-to validate the users' identity.
NEW QUESTION # 56
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 # 57
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 # 58
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