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>> FlashArray-Implementation-Specialist Exam Exercise <<
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NEW QUESTION # 81
A customer has ordered several FlashArrays and wants to have ActiveCluster configured. What is the maximum quantity of arrays supported with ActiveCluster?
Answer: A
Explanation:
FlashArray ActiveCluster is designed for synchronous replication between two FlashArray systems, enabling active-active configurations across two sites. This setup allows both arrays to serve I/O simultaneously, providing high availability and zero RPO (Recovery Point Objective). Each array in the ActiveCluster configuration maintains identical volume identities, ensuring seamless access for hosts regardless of the array they connect to. The configuration supports metro-area clustering, with a maximum round-trip latency of 11 milliseconds between arrays. Additionally, the Pure1 Cloud Mediator or an on-premises mediator is utilized to manage failover and prevent split-brain scenarios, eliminating the need for a third site or external gateway.
While ActiveCluster supports a two-site configuration, it does not support additional arrays within the same synchronous setup. For scenarios requiring protection across more than two sites, asynchronous replication solutions like ActiveDR™ can be employed. ActiveDR allows for asynchronous replication to a third site, providing broader disaster recovery capabilities.
Therefore, the maximum number of arrays supported in a single ActiveCluster configuration is two.
NEW QUESTION # 82
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.
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NEW QUESTION # 83
An Implementation Engineer is performing a FlashArray//X to FlashArray//XL HWNDU. After rebooting a controller, the new controller fails to reach a ready state. Which command should the Implementation Engineer run to resolve the issue?
Answer: C
Explanation:
Upgrading from a FlashArray//X to a FlashArray//XL is a complex procedure involving significant hardware and network architecture changes. A known issue during specific phases of this upgrade involves the synchronization of ARP tables and IP neighbor entries between the legacy environment and the new controller architecture, which can prevent the High Availability (HA) link from establishing correctly.
If the new controller hangs or fails to reach a "Ready" state after a reboot, the engineering-level script ha_sync.py --resync ipneigh is the prescribed resolution.
This script forces a resynchronization of the IP neighbor table (ARP cache) and HA state information.
It clears stale entries that might be pointing to old MAC addresses or interfaces that moved during the X-to-XL transition.
Once cleared, the controllers can correctly rediscover each other over the internal HA interconnect and proceed to a healthy clustered state.
Options like hardware_check.py are diagnostic only, and firewall.py is for packet filtering, not ARP/HA sync issues.
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NEW QUESTION # 84
How many chassis capacity drive slots come standard on a FlashArray//X Gen 2 chassis?
Answer: B
Explanation:
Understanding the physical chassis layout of the Pure Storage FlashArray is essential for capacity planning and hardware installation. The FlashArray//X Gen 2 (and Gen 3) utilizes a highly efficient 3U chassis design.
When looking at the front of a standard //X chassis, there are a total of 24 physical module bays. However, these bays serve fundamentally different architectural purposes:
* Capacity Drive Slots: There are exactly 20 slots strictly dedicated to capacity drives (DirectFlash Modules, or DFMs). These are numbered 0 through 19 and are where the data packs are installed to provide raw storage capacity.
* NVRAM Slots: The remaining 4 slots, located centrally in the chassis, are dedicated exclusively to NVRAM modules (NVB0, NVB1, NVB2, and NVB3). These provide the highly available, non-volatile write cache for the array and cannot be used for capacity expansion.
Therefore, when an Implementation Engineer is assessing the chassis for data pack expansion or module upgrades, there are exactly 20 standard capacity drive slots available before an external DirectFlash Shelf (DFS) must be added. (Note: FlashArray//XL utilizes a larger 5U chassis with 40 capacity slots, but the standard //X remains at 20).
NEW QUESTION # 85
Which NVRAM bays are always populated on the FlashArray//XR2/3?
Answer: A
Explanation:
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.
NEW QUESTION # 86
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