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| Section | Objectives |
|---|---|
| Topic 1: Upgrade | - Hardware component swaps and shelf upgrades - Controller and drive firmware upgrades - Purity upgrade procedures and version management |
| Topic 2: Post-Install/Upgrade | - Establish monitoring baselines - Optimize configuration settings - Confirm FlashArray meets performance targets - Integrate with existing storage networks - Verify system performance and validate data integrity |
| Topic 3: Pre-Install | - Plan capacity and assess current infrastructure - Validate site-survey data prior to installation - Evaluate existing workloads and determine upgrade paths - Identify compatibility requirements - Document pre-flight checks to minimize downtime and risk - Prepare migration strategies - Determine if best practices are met for deployment readiness |
| Topic 4: Install | - Validate prerequisites and connect components - Initial configuration and system bring-up procedures - Confirm system readiness before production deployment - Hardware setup and cabling requirements |
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NEW QUESTION # 154
FlashArray//C and //E models use which flash storage architecture, identifiable by gray tabs on the DirectFlash Module carriers?
Answer: B
Explanation:
Pure Storage differentiates its product lines based on the type of NAND flash used, optimizing for either performance or capacity/cost.
* FlashArray//X uses TLC (Triple-Level Cell) flash for high performance and endurance. These modules typically have orange tabs.
* FlashArray//C and FlashArray//E are designed for high-capacity, capacity-optimized workloads.
They utilize QLC (Quad-Level Cell) flash.
QLC flash stores 4 bits per cell, offering higher density at a lower cost per terabyte, but with different endurance characteristics managed by the DirectFlash software. To help engineers and customers physically distinguish these modules, QLC DirectFlash Modules feature gray release tabs on the carrier. Identifying these tabs confirms that the correct media type is being installed into the capacity-oriented //C or //E chassis.
=========
NEW QUESTION # 155
Prior to running the puresetup command, which command should an Installation Engineer run on a new install of a FlashArray//XR4 array?
Answer: A
Explanation:
The FlashArray//XR4 introduces a new hardware platform architecture (internally codenamed or associated with "Cobalt" components for its BMC and chassis management). During the manufacturing and initial deployment phase, specific validation scripts are used to ensure the platform hardware is correctly initialized before the Purity Operating Environment takes over.
For a new install of a FlashArray//XR4, the Implementation Engineer is often required to run cobalt check .
py (or cobalt_check.py).
* This engineering-level Python script queries the Baseboard Management Controller (BMC) and internal sensors to verify that the chassis components, fans, and power delivery systems are reporting "Healthy" status specifically for the R4 architecture.
* Running this before puresetup prevents the setup process from failing midway due to a hardware initialization error. It acts as a "pre-flight" hardware validation specific to the R4 generation's new chipset and management subsystem.
=========
NEW QUESTION # 156
When performing a FlashArray//X50R3 to FlashArray//XL130R5 upgrade, what should the Implementation Engineer do with the 20 DirectFlash Modules from the FlashArray//X50R3?
Answer: D
Explanation:
When transitioning to a significantly different hardware platform-like moving from a 3U FlashArray//X50 R3 to a 5U FlashArray//XL130 R5-customers typically leverage Pure Storage's Evergreen storage programs (such as Ever Agile or Capacity Consolidation).
The FlashArray//XL introduces a fundamentally different chassis architecture. It requires a minimum of 20 DirectFlash Modules with distributed NVRAM (DFMDs) populated in slots 0-19 to provide the necessary write caching, completely replacing the standalone NVRAM modules found in the older //X series.
Options A and B are procedurally incorrect. While it is technically possible to retain compatible older DFMs in an //XL chassis (specifically in slots 20-39), moving drives "one at a time, allowing parity to reach 100%" is never the standard Pure Storage procedure for a hardware upgrade. Evacuating and rebuilding parity for 20 individual drives sequentially would take an exorbitant amount of time, severely degrade array performance during the continuous rebuilds, and expose the system to unnecessary data loss risks. Pure Storage does not use a drive-by-drive rebuild methodology for controller or chassis swaps.
Instead, when older capacity is being replaced, a non-disruptive upgrade (NDU) or data migration is orchestrated via Purity's upgrade scripts and array-to-array migration tools. All data is transparently migrated from the legacy //X50 R3 drives to the fully populated DFMDs/DFMs in the new //XL130 R5. Once the software verifies that the data migration phase is successfully complete, the 20 legacy DirectFlash Modules from the //X50 R3 are decommissioned and returned to Pure Storage to fulfill the trade-in agreement.
NEW QUESTION # 157
An Implementation Engineer is getting ready to install four DFMs into a 16-module efficiency bundle and notices that the new modules are DFMDs while the installed modules are DFMs.
What should the Implementation Engineer do to get the array using a 20-module wide write group?
Answer: A
Explanation:
Understanding the strict hardware boundaries of Pure Storage capacity expansion is critical. DirectFlash Modules (DFMs) and DirectFlash Modules with Distributed NVRAM (DFMDs) are fundamentally different hardware components. Standard DFMs contain only raw NAND flash and rely entirely on centralized, dedicated NVRAM modules located in the array chassis to protect write cache. DFMDs, however, feature their own onboard non-volatile memory to distribute the cache load across the capacity drives (primarily utilized in //XL and //XR4 architectures).
Pure Storage architecture explicitly dictates that drives operating within a single efficiency bundle or Wide Write Group (WWG) must be of the exact same hardware classification to ensure predictable parity calculation, wear leveling, and cache distribution. Mixing legacy DFMs with newer DFMDs within the same
20-module write group creates a severe hardware imbalance and is a strictly unsupported configuration.
While internal engineering tunables (like those suggested in Option A) occasionally exist to force overrides in lab environments, applying them in a customer's production array to bypass physical hardware incompatibility violates all implementation best practices. The only correct and safe action for the Implementation Engineer is to halt the physical installation, flag the Bill of Materials (BOM) mismatch, and work with the account
/logistics team to RMA the DFMDs and ship the correct standard DFMs.
NEW QUESTION # 158
An Implementation Engineer is setting up a customer environment and has specified a number of NTP servers.
Which command should the Implementation Engineer run to list the NTP servers that have been configured?
Answer: A
Explanation:
The command purenetwork list --ntpserver displays the configured NTP servers on the FlashArray network settings.
NEW QUESTION # 159
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