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>> FlashArray-Storage-Professional実際試験 <<
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質問 # 75
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?
正解：B
解説：
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.
質問 # 76
Pure Protect //DRaaS is configured with a Business Policy to back up data to AWS. An administrator, with DRaaS Global Admin access, is trying to delete the policy but is unable to do so.
What is restricting the administrator from deleting the policy?
正解：C
解説：
In policy-driven data protection and disaster recovery architectures like Pure Protect //DRaaS, a "Business Policy" dictates the critical Service Level Agreements (SLAs) for your environment, such as your Recovery Point Objective (RPO), replication frequency, and retention schedules. These policies are then assigned to "Application Groups," which act as logical containers for the specific virtual machines being protected and replicated to AWS.
As a fundamental safety mechanism built into the platform to prevent accidental exposure and SLA breaches, the system places a hard dependency lock on actively used policies. An administrator cannot delete a Business Policy if there are still Application Groups actively relying on it for their DR scheduling. To successfully delete the policy, the administrator must first modify all associated Application Groups and assign them to a different Business Policy, or completely remove the protection from those groups.
Here is why the other options are incorrect:
The administrator also needs DRaaS Cloud Admin access (C): The scenario explicitly states the user already has "DRaaS Global Admin access." In the Pure Protect //DRaaS Role-Based Access Control (RBAC) model, Global Admin is the highest tier of privilege and has full rights to manage and delete policies. A lack of permissions is not the issue here.
The Business Policy is marked as the Primary Policy (B): While a policy might be a default or primary template, the actual hard restriction that prevents deletion in the software is active resource assignment (the Application Groups), not just a "Primary" label.
質問 # 77
What is unified storage for Pure?
正解：B
解説：
Definition of Unified Storage: In the storage industry, "Unified Storage" refers to a platform that can natively serve both Block-level storage (accessed via protocols like Fibre Channel, iSCSI, or NVMe-oF) and File-level storage (accessed via protocols like NFS or SMB) from a single pool of capacity and under a single management interface.
Pure Storage Implementation (FA File): Pure Storage achieved unified storage on the FlashArray through the introduction of Purity//FA File Services. Unlike traditional unified storage that often required a "gateway" or separate hardware "heads," Pure's implementation runs natively on the FlashArray controllers.
Shared Resources: On a unified FlashArray, the global storage pool is shared between volumes (Block) and file systems (File). All of Pure's core data services-such as deduplication, compression, and SafeMode snapshots-apply globally across both block and file data.
Protocol Diversity: While Option A mentions NFS and SMB, those are strictly File protocols. Option C mentions iSCSI and FC, which are strictly Block protocols. Only Option B correctly identifies the combination of Block and File, which defines the "Unified" architecture of the FlashArray.
質問 # 78
The SNMP protocol can be used to monitor what statistics of the array's performance?
正解：C
解説：
SNMP Capabilities on FlashArray: Pure Storage FlashArrays support SNMP (Simple Network Management Protocol) versions v2c and v3. The primary use case for SNMP on the FlashArray is for integration with third-party monitoring tools (like SolarWinds, Nagios, or Zabbix) to provide a real-time health and performance heartbeat.
Performance Metrics (MIBs): The Pure Storage Management Information Base (MIB) specifically exposes high-level array performance metrics. These include the "Big Three" of storage performance: Latency (response time in microseconds), Bandwidth (throughput in bytes per second), and IOPS (I/O operations per second).
Scope of Monitoring: While the FlashArray GUI and CLI provide deep granularity (per host, per volume, or per pod), standard SNMP queries typically focus on array-wide performance and health status. Detailed "Host and volume performance" (Option B) is generally more effectively monitored via the Pure Storage REST API or the Pure1 VM Analytics, as SNMP is less efficient for pulling large tables of per-object data.
Capacity vs. Performance: While SNMP can report on capacity (Option C) through specific OIDs, the question specifically asks about performance statistics. In the context of Pure Storage monitoring documentation, the core performance metrics provided via SNMP traps and polling are latency, bandwidth, and IOPS.
質問 # 79
Which protection group cannot be ratcheted for SafeMode?
正解：C
解説：
What is SafeMode Ratcheting?: SafeMode is Purity's "immutability" feature that prevents snapshots from being deleted, eradicated, or modified, even by an administrator with compromised credentials. Ratcheting is the process of increasing the protection levels (like extending the retention period) for a protection group (pgroup) to ensure even stricter data safety.
The Dependency on Local Snapshots: SafeMode's primary function is to protect point-in-time copies of data residing on the array. For a protection group to be "ratcheted" into a SafeMode-protected state, it must have an active Local Snapshot Schedule.
Why Option C is the Constraint: If a protection group does not have a local snapshot schedule, there are no local snapshots being generated for SafeMode to "lock." SafeMode cannot protect what doesn't exist locally. While a pgroup might be used for replication only, SafeMode requires the local scheduling component to be active and configured to apply its immutable retention policies.
Why Option B is incorrect: Protection groups are designed to contain hosts, host groups, or volumes. This is the standard way to group related data for snapshot consistency and has no negative impact on SafeMode eligibility.
Operational Note: When you enable SafeMode on a protection group with a local schedule, the "Erradicate" button for those snapshots is disabled. To "ratchet" the protection, you typically work with Pure Storage Support to ensure the retention settings meet your compliance needs.
質問 # 80
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