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Pure Storage FlashArray-Implementation-Specialist Exam Syllabus Topics:

SectionObjectives
Monitoring, Performance, and Troubleshooting- Troubleshooting
  • 1. Performance bottleneck analysis
    • 2. Common host connectivity issues
      - System monitoring
      • 1. Performance metrics and dashboards
        • 2. Alerting and event logs
          Data Protection and Availability- Snapshot and protection strategies
          • 1. Snapshot scheduling and recovery
            • 2. Protection groups configuration
              - Replication
              • 1. Asynchronous replication concepts
                • 2. Disaster recovery planning
                  Installation and Initial Configuration- Host connectivity
                  • 1. Host attachment best practices
                    • 2. iSCSI and Fibre Channel configuration
                      - System setup
                      • 1. Network configuration and connectivity setup
                        • 2. Initial array configuration and onboarding
                          FlashArray Architecture and Core Concepts- Storage concepts
                          • 1. Volumes and pods concepts
                            • 2. Thin provisioning and deduplication basics
                              - FlashArray hardware and architecture overview
                              • 1. NVRAM and metadata handling
                                • 2. Controller architecture and data flow

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                                  Pure Storage Certified FlashArray Implementation Specialist FlashArray-Implementation-Specialist Prüfungsfragen mit Lösungen (Q198-Q203):

                                  198. Frage
                                  What is the required PSU wattage for a FlashArray// X70R2/R3 or X90R2/R3 array?

                                  Antwort: C

                                  Begründung:
                                  The FlashArray//X70 (R2/R3) and FlashArray//X90 (R2/R3) require 1600W Power Supply Units (PSUs) .
                                  Pure Storage equips its FlashArray//X chassis with different power supply capacities based on the compute load of the installed controllers:
                                  * Performance Tier (X70/X90): These models utilize high-core-count Intel Xeon processors and support the maximum density of NVMe DirectFlash Modules. To support the peak power draw of these components while maintaining N+1 redundancy (where one PSU can support the entire load), the
                                  1600W units are mandatory.
                                  * Entry/Mid Tier (X10/X20/X50): Lower-end models often ship with 1000W or 1200W PSUs (though X50 often uses 1600W in later revisions or specific configs).
                                  * Identification: Implementation Engineers can identify these PSUs by the label on the rear handle (often color-coded or explicitly marked "1600W"). Installing an X90 controller into a chassis with older
                                  1200W PSUs (e.g., during an improper upgrade attempt) would likely trigger a hardware alert or prevent the controllers from booting due to insufficient power budget.


                                  199. Frage
                                  Which NVRAM bays are always populated on the FlashArray//XR2/3?

                                  Antwort: D

                                  Begründung:
                                  On standard Pure Storage FlashArray models, including the //XR2 and //XR3 generations, the hardware architecture relies heavily on dedicated, non-volatile memory (NVRAM) modules. These modules are responsible for safely ingesting incoming host writes and protecting data in flight against unexpected power loss or controller failures before the data is ultimately destaged to the capacity flash drives.
                                  To maintain absolute high availability and guarantee there is no single point of failure within the write cache, this NVRAM must always be mirrored across separate physical modules. During the physical hardware installation, the Implementation Engineer populates the dedicated NVRAM bays located centrally on the front bezel of the chassis. According to official Pure Storage implementation guidelines, the primary pair of NVRAM modules must always be installed in the first two designated bays, which are explicitly labeled 0 and 1 (NVB0 and NVB1).
                                  While higher-performance arrays in the series (like the //X70 and //X90) possess enough ingest bandwidth to require populating bays 2 and 3 as well, bays 0 and 1 are the universal minimum baseline that is definitively populated across every array in the series to ensure N+1 cache redundancy.


                                  200. Frage
                                  When installing a FlashArray//XR5, at a minimum, which slots will use NVRAM?

                                  Antwort: C

                                  Begründung:
                                  The FlashArray//XR5 (and //E family) introduces a significant architectural shift regarding Non-Volatile RAM (NVRAM). In previous generations (like R2/R3), NVRAM was provided by dedicated PCIe modules installed in specific "NVB" slots in the chassis.
                                  In the //XR5 architecture, Pure Storage moved to Distributed NVRAM. The NVRAM functionality is integrated directly into the DirectFlash Modules (specifically the DFMDs - DirectFlash Module with Distributed NVRAM). This allows the NVRAM capacity to scale with the storage and removes the bottleneck of dedicated slots.
                                  For a system to function correctly, a minimum number of these NVRAM-equipped modules must be present to form the initial write buffer and system quorum. The standard installation requirement for an //XR5 is that the first 10 slots (Slots 0-9) are populated with these specific DFMDs. This ensures there is sufficient distributed NVRAM capacity to boot the Purity operating environment and handle incoming writes safely. The Implementation Engineer must populate these slots first before adding standard DFMs in the remaining slots.
                                  =========


                                  201. Frage
                                  An Implementation Engineer performs a controller upgrade. What is the command to check I/O health?

                                  Antwort: A

                                  Begründung:
                                  The command purehost monitor --balance checks the distribution and health of I/O across hosts and initiators, helping verify balanced I/O after a controller upgrade.


                                  202. Frage
                                  Prior to running the puresetup newarray command, which command should an Installation Engineer run on a new install of an //XR4 array?

                                  Antwort: B

                                  Begründung:
                                  Running cobalt_check.py on a new //XR4 array verifies hardware and system readiness before executing puresetup newarray, ensuring a smooth setup process.


                                  203. Frage
                                  ......

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