Pure Storage FlashArray-Implementation-Specialist Certification Exam Dumps with 236 Practice Test Questions
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NEW QUESTION # 101
An Implementation Engineer is onsite to install a new DFM data pack (DP) to CH0.BAY10-CH0.BAY19 of a FlashArray. After adding the drives to the chassis, which command should the Implementation Engineer run to verify if the new DP is in a wide write group?
- A. find_drive.py
- B. puredb list drives
- C. puredrive list --pack CH0.BAY10
Answer: C
Explanation:
To verify the status, presence, and admission of a specific data pack, the correct command is puredrive list -- pack CH0.BAY10 .
In the context of FlashArray geometry, a "Write Group" (RAID set) is formed by combining DirectFlash Modules. A "Wide Write Group" typically consists of 10 modules (a full data pack). When an engineer installs a standard 10-pack of drives (Bays 10-19), verifying that all 10 drives are successfully recognized and
"admitted" confirms that the system has formed the intended wide write group.
The puredrive list command with the --pack argument filters the output to show only the drives in that specific pack. The engineer checks that all 10 drives are listed and their status is "healthy" or "admitted" . If fewer drives were admitted (e.g., only 5), it would indicate a "narrow" write group or a hardware issue.
* Option A (find_drive.py) is a utility script used to physically locate a drive by blinking its LED, not to check logical RAID configuration.
* Option B (puredb list drives) is an internal engineering command (puredb) that is generally not intended for standard field verification and may require root-level access. The puredrive command is the standard CLI tool for this validation.
NEW QUESTION # 102
Which user does an Implementation Engineer use when preparing for the Purity upgrade to complete a HWNDU?
- A. pureinstall
- B. pureuser
- C. puresetup
Answer: B
Explanation:
When performing a Hardware Non-Disruptive Upgrade (HWNDU) or preparing for a Purity software upgrade, the Implementation Engineer must log in with a user account that has full administrative privileges to execute upgrade commands, run health checks, and manage the array state.
The pureuser account is the standard administrative superuser for the FlashArray. It is used for all day-to-day administration and maintenance tasks, including initiating upgrades via the CLI (pureinstall or pureupdate commands) and verifying system health (purearray health, pureadm list). The puresetup account is strictly for initial array initialization (setting IPs and array name) and is disabled or restricted once the array is up and running. pureinstall is a command, not a user account. Therefore, pureuser is the correct authenticated session required to manage the upgrade process.
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NEW QUESTION # 103
The Pure Engagement Request (PER) specifies that iSCSI ports ETH2 and ETH3 should be set to 10 Gb/s.
After configuring the ports and connecting them to the SAN, the Implementation Engineer observes that ETH2
/3 are not negotiating and display 0 b/s. The SAN is operating at 40 Gb/s, with support for up to 100 Gb/s.
What should the Implementation Engineer do to resolve this issue and complete the install?
- A. Force negotiate the array iSCSI ports to 40 Gb/s.
- B. Force negotiate the switch iSCSI ports to 40 Gb/s.
- C. Replace the transceivers with the appropriate type.
Answer: C
Explanation:
This scenario describes a physical layer mismatch between the FlashArray optics and the customer's switch infrastructure.
* The PER (planning document) specified 10 Gb/s , so the Implementation Engineer likely installed 10 Gb SFP+ transceivers into the array.
* The SAN Switch is operating at 40 Gb/s (likely using QSFP+ ports).
You cannot simply "force negotiate" a 10Gb SFP+ optic to run at 40Gb/s, nor can you plug a 10Gb SFP+ directly into a 40Gb QSFP+ port without specific breakout cables or QSA adapters that match the signaling.
The physical transceivers themselves are incompatible with the link speed required by the switch.
To resolve this, the Implementation Engineer must replace the transceivers with the appropriate type .
* If the switch is 40Gb native, the array needs 40Gb (QSFP+) optics (if supported on that slot).
* Alternatively, if the customer intends to use 10Gb, they must provide 10Gb ports on their switch side.
* Given the prompt implies the SAN is 40Gb, the 10Gb optics in the array are the incorrect hardware for that link.
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NEW QUESTION # 104
Prior to running the puresetup newarray command, which command should an Installation Engineer run on a new install of an //XR4 array?
- A. pureboot list
- B. cobalt_check.py
- C. purehw list
Answer: B
Explanation:
Running cobalt_check.py on a new //XR4 array verifies hardware and system readiness before executing puresetup newarray, ensuring a smooth setup process.
NEW QUESTION # 105
What is the the minimum supported capacity requirement for a FlashArray//XL170R5?
- A. 135TB
- B. 115TB
- C. 90TB
Answer: B
Explanation:
The FlashArray//XL170R5 is a high-performance, high-capacity enterprise storage system. To maintain its performance characteristics and data layout efficiency, Pure Storage enforces a minimum raw capacity requirement for new orders and installations.
For the //XL170R5 model, the minimum supported configuration is 115TB of raw flash. This is typically achieved through a specific population of DirectFlash Modules (e.g., twenty 5.5TB modules or a similar combination that meets the threshold).
Implementation Engineers must verify during the pre-installation site readiness review that the hardware delivered matches this minimum. Attempting to initialize an //XL170 with significantly less capacity (e.g., 90TB) would be an unsupported configuration, potentially leading to performance degradation or an inability to initialize the wide write groups required by the //XL architecture.
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NEW QUESTION # 106
In a situation where iSCSI cards need to be re-used during a controller upgrade, which is a valid transfer path?
- A. M > XR2
- B. XR2 > XR3
- C. M > XR2/3
Answer: B
Explanation:
iSCSI cards can be reused when upgrading from XR2 to XR3 controllers, supporting hardware continuity within this upgrade path.
NEW QUESTION # 107
What command should the Implementation Engineer run to configure a proxy?
- A. purearray setattr --proxy https://yourproxyserver:1234
- B. purearray configure --proxy url https://example.proxy.server
- C. puresetup proxy https://yourproxyserver:1234
Answer: A
Explanation:
FlashArrays require outbound HTTPS connectivity to reach Pure1 for log uploads, phone home, and remote assist. In many enterprise environments, direct internet access is blocked, and traffic must be routed through an HTTP/HTTPS proxy.
To configure this setting in Purity via the CLI, the correct command is purearray setattr --proxy followed by the full proxy URL (including protocol and port). The setattr (set attribute) subcommand is the standard method for modifying array-wide configuration parameters like the array name, idle timeout, and proxy settings. The other command variations (puresetup proxy or purearray configure) are incorrect syntax for this specific operation. This configuration is often a critical step during the "Pre-Flight" or initial setup phase to ensure the array can "phone home" immediately upon deployment.
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NEW QUESTION # 108
What upgrade scenario required an upgrade of power supplies?
- A. X50R2 > X50R3
- B. X10 > X50
- C. X50 > X70
Answer: B
Explanation:
Upgrading from FlashArray X10 to X50 requires upgrading power supplies to meet the higher power demands of the larger chassis and expanded hardware.
NEW QUESTION # 109
An Implementation Engineer is installing a second DirectFlash Shelf (DFS) on a FlashArray//XR4 controller.
How should the Implementation Engineer complete the installation?
- A. Install a DFS card in PCIe slot 0 and use these ports for shelf connectivity.
- B. Install a DFS card in PCIe slot 4 and use it to connect the second DirectFlash Shelf.
- C. Daisy-chain the second shelf directly into the SAS ports of the first DirectFlash Shelf.
- D. Install a DFS card in PCIe slot 3 and use it to connect the second DirectFlash Shelf.
Answer: B
Explanation:
The FlashArray//XR4 architecture fundamentally changed how external capacity is attached compared to older SAS-based or early NVMe platforms. Because DirectFlash Shelves (DFS) utilize massive 100GbE RDMA over Converged Ethernet (RoCE) for their backend loops to maintain NVMe-level performance, specific port and slot assignments are heavily regulated.
On an //XR4 model (such as the //X70 R4 or //X90 R4), the controllers feature dedicated, integrated 100GbE ports on the motherboard (specifically eth18 and eth19) which are strictly reserved for the first DirectFlash Shelf loop.
However, when an Implementation Engineer needs to install a second DirectFlash Shelf, the integrated onboard ports are already fully saturated. Pure Storage does not support daisy-chaining NVMe-oF RoCE shelves in the same manner as legacy SAS enclosures. Instead, a new dedicated backend fabric loop must be established. To accomplish this, the engineer must install an additional 100GbE RoCE PCIe expansion card.
According to the official //XR4 PCIe Slot Population Matrix, the designated location for this secondary backend expansion card is PCIe Slot 4 . Installing the card into other frontend-designated slots (like Slot 0 or Slot 3) will trigger a topology mismatch during the array's pre-flight hardware checks and prevent the new shelf from initializing.
NEW QUESTION # 110
After running puredb run giveback --safe command once CT0 has been upgraded, how long should the Implementation Engineer wait before continuing with the controller upgrade?
- A. 3 minutes
- B. 10 minutes
- C. 5 minutes
Answer: B
Explanation:
Waiting 10 minutes after running puredb run giveback --safe ensures the system completes safe resource rebalancing and stabilizes before proceeding with the next controller upgrade step.
NEW QUESTION # 111
A customer wants to expand the capacity of their FlashArray//X10 from 5/5 to 11/11. Which is the correct action to take?
- A. Perform a drive-by-drive swap of the modules.
- B. Evacuate and swap one pack at a time.
- C. Install a swing shelf with loan capacity to evacuate to.
Answer: C
Explanation:
To expand capacity from 5/5 to 11/11 packs, a swing shelf with temporary loan capacity is needed to safely evacuate data during the upgrade without risking data availability.
NEW QUESTION # 112
After completing an installation, the customer requests to configure replication IP settings. Where in the GUI does the customer need to navigate in order to do this?
- A. Storage > Array Connections
- B. Storage > Replication
- C. Settings > Network
Answer: C
Explanation:
Configuring replication involves two distinct steps: setting up the physical network interfaces (IP addresses) and then connecting the arrays (partnerships). The question specifically asks where to configure replication IP settings.
In the Purity//FA GUI, the configuration of Ethernet interfaces-regardless of their use for Management, iSCSI, or Replication-is centralized under the Settings tab, specifically within the Network sub-menu.
Settings > Network: Here, the user selects the Ethernet ports (e.g., eth2, eth3) designated for replication and assigns them IP addresses, netmasks, and gateways (or assigns them to a subnet).
Storage > Array Connections: This is where you use those configured IPs to connect to a remote array and establish the replication partnership.
Storage > Replication: This tab is used to monitor replication sessions and manage protection groups (snapshots/policies), not to configure the underlying interface IPs.
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NEW QUESTION # 113
Which PCIe slot must be used for a SAS HBA on R4B revision controllers?
- A. PCIe slot 0
- B. PCIe slot 1
- C. PCIe slot 4
Answer: B
Explanation:
While modern FlashArrays (like the XR4 and XL series) primarily use NVMe-oF/RoCE for backend connectivity, specific configurations or legacy support scenarios may still require a SAS HBA (Serial Attached SCSI Host Bus Adapter), for example, when connecting to older SAS-based expansion shelves during a migration or hybrid configuration.
For R4B revision controllers (a specific hardware revision of the Gen 4 controller), the strict hardware addressing map requires that any SAS HBA be installed in PCIe Slot 1.
Slot 1 provides the specific PCIe lane routing and BIOS interrupts required for the legacy SAS controller to be recognized and function without conflicting with the native NVMe fabric.
Installing the card in Slot 0 (typically reserved for RoCE/Ethernet backend) or Slot 4 would likely result in the card being ignored by Purity or causing boot errors due to resource conflict.
NEW QUESTION # 114
Which enablement feature will cause Mirrored Write statistics to appear in the Analysis section of the FlashArray Purity 6.x GUI?
- A. FA File
- B. ActiveDR
- C. ActiveCluster (AC)
Answer: C
Explanation:
Mirrored Write statistics appear in the Purity GUI's Analysis section when ActiveCluster is enabled, as it tracks synchronous replication activity between clusters.
NEW QUESTION # 115
Which Purity command can be used to validate I/O is balanced across initiators?
- A. purehost list --balance
- B. purehost iobalance --check
- C. purehost monitor --balance
Answer: B
Explanation:
The purehost iobalance --check command validates whether I/O is balanced evenly across initiators, helping ensure optimal performance and distribution.
NEW QUESTION # 116
During an intra-series upgrade from //XR3 to //XR4, which command should the Implementation Engineer run to verify host connectivity before removing the secondary controller?
- A. host_connectivity --hosts
- B. purehost list --host | less
- C. iobalance --sampletime 30
- D. purenetwork monitor --live
Answer: C
Explanation:
Executing an intra-series Hardware Non-Disruptive Upgrade (HWNDU) from a FlashArray//XR3 to an //XR4 is a highly orchestrated procedure. It involves failing over active I/O responsibilities, physically removing legacy controller nodes, and seamlessly introducing newer generation hardware without causing any downtime for the connected hosts.
Before an Implementation Engineer physically unplugs or removes a secondary controller-or initiates a failover to take the primary controller offline-it is an absolute prerequisite to verify that the frontend host multi-pathing is healthy. If a host is accidentally single-pathed to the controller that is about to be removed, an all-paths-down (APD) event will occur, causing immediate application disruption.
To safely validate this from the array's perspective, the engineer must execute the iobalance --sampletime 30 command within the Purity CLI. This specialized diagnostic command forces the array to actively sample and monitor the incoming SCSI/NVMe read and write commands across all frontend target ports for a continuous
30-second window. The output produces a detailed matrix showing exactly how traffic is distributed across both controllers and all active host initiators. If the data confirms that I/O is cleanly balanced and redundantly flowing across the surviving controller's paths, the engineer can confidently proceed with the physical removal phase of the HWNDU.
NEW QUESTION # 117
An Implementation Engineer has installed a data pack and the puredrive list command shows the drives in
"unadmitted" status.
Which command should the Implementation Engineer run to complete the admission?
- A. puredrive admit
- B. puredrive add
- C. purearray drive admit
- D. purehw drive admit
Answer: A
Explanation:
Capacity expansion on a Pure Storage FlashArray is a highly controlled, safe process. When an Implementation Engineer physically unboxes and inserts a new data pack (a group of DirectFlash Modules) into the available drive bays of a chassis or a DirectFlash Shelf, the Purity operating system detects the hardware instantly. However, it does not automatically wipe the drives and assimilate them into the global storage pool.
Instead, the newly inserted modules are placed into a safe, quarantined state known as "unadmitted." This intentional design choice prevents catastrophic data loss in the event that an engineer accidentally inserts a drive containing live data from another system, or inserts drives before the customer is financially or operationally ready to activate the new capacity.
To officially claim the drives, integrate them into the system's Wide Write Groups (WWGs), and initiate the background parity redistribution process, the Implementation Engineer must explicitly authorize their use.
This is accomplished by running the puredrive admit command. The engineer can either specify the exact drives (e.g., puredrive admit CH0.BAY10 CH0.BAY11...) or use a global flag like puredrive admit --all if all unadmitted drives are ready for ingestion. Once admitted, the drives transition to a "healthy" state, and the array's total usable capacity increases seamlessly without any host disruption.
NEW QUESTION # 118
Before installing array rails, where should the cage nuts be placed?
- A. Top square of the lowest RU
- B. Lowest square of lowest RU
- C. Lowest square of top RU
Answer: A
Explanation:
When installing rails for a FlashArray in a rack requiring cage nuts (square hole racks that are not using the tool-less mechanism, or specific threaded adaptations), the correct placement for the cage nut is the top square of the lowest Rack Unit (RU) that the rail will occupy.
Pure Storage rail kits typically secure at the bottom of the targeted rack unit.
* The "3-Hole" Rule: A standard Rack Unit (1U) consists of three vertical holes (often referred to as the bottom, middle, and top hole).
* Alignment: The rail flange is designed to align such that the retaining screw or positioning stud engages specific holes to support the weight. For the standard securement point, the documentation specifies installing the cage nut in the top hole of the specific RU where the rail base sits (often the
"lowest" RU if the device spans multiple U's, though the rail itself is 1U high).
* Precision: Placing it in the "Lowest square of the lowest RU" (Option A) would interfere with the rail's shelf lip or the device below it. Correct alignment ensures the rail is level and the chassis slides in without binding.
NEW QUESTION # 119
What is the maximum number of DirectFlash Shelves supported for FlashArray//XL?
- A. 0
- B. 1
- C. 2
Answer: B
Explanation:
The FlashArray//XL supports up to four DirectFlash Shelves (DFS), each providing up to 1.9PB of effective capacity, enabling a total effective capacity of up to 7.6PB when fully expanded.
NEW QUESTION # 120
What command can be used to identify interface status?
- A. purenetwork list
- B. purenetwork list --all
- C. purenetwork list --eth
Answer: B
Explanation:
The command purenetwork list --all provides a comprehensive view of all network interfaces and their status on the FlashArray.
NEW QUESTION # 121
During an intra-series upgrade from //XR3 to //XR4, which command should the Implementation Engineer run to verify host connectivity before removing the secondary controller?
- A. host_connectivity --hosts
- B. purehost list --hostless
- C. iobalance --sampletime 30
Answer: C
Explanation:
In a Non-Disruptive Upgrade (NDU), ensuring that the host is correctly multipathed and balancing I/O across all paths is critical before taking a controller down. If a host is only using paths to the controller about to be rebooted (CT0, for example), taking that controller offline would cause an outage.
The command iobalance --sampletime 30 (or its wrapper purehost monitor --balance) is the standard tool used during the upgrade procedure to validate this state.
iobalance: This script samples the I/O throughput on all ports for a specified duration (e.g., 30 seconds).
It analyzes the distribution of I/O. If it detects that I/O is heavily skewed or missing entirely on the "secondary" paths (the ones that will survive the reboot), it flags a warning.
This allows the Implementation Engineer to pause and remediate the host multipathing configuration (e.g., fixing a bad cable or zoning issue) before proceeding with the controller removal, ensuring the NDU remains truly non-disruptive.
NEW QUESTION # 122
A customer has a DirectFlash Shelf installed on a FlashArray//X90R4. The 208V rack PDUs are full, but there are five 120V connections available at the top of the rack.
What should the Implementation Engineer understand about powering the DirectFlash Shelf in this scenario?
- A. The shelf can operate temporarily on 120V, but 208/240V should be used as soon as it's available.
- B. The shelf requires at least 180V to operate and will NOT power on with 120V.
- C. The shelf can be fully supported by 120V for the duration of its service life.
- D. The shelf will operate on 120V but with severely degraded NVMe-oF performance.
Answer: C
Explanation:
When dealing with power architecture on high-end arrays like the FlashArray//X90 R4, understanding the difference between the base chassis and the expansion shelves is critical. The base //X90 chassis-housing the powerful Intel CPUs, massive memory footprint, and primary PCIe lanes-draws significant wattage and strictly requires 200V-240V (208V minimum) power inputs to function. It will literally not power on if plugged into a 120V circuit.
However, a DirectFlash Shelf (DFS) is merely an external NVMe-oF expansion enclosure. It houses the DirectFlash Modules (DFMs) and the necessary backend I/O modules, but completely lacks the compute- heavy controllers of the main array. Because its overall power draw is significantly lower, the official Pure Storage hardware specifications state that DirectFlash Shelves are fully rated and completely supported to run on standard 120 VAC power indefinitely.
Therefore, the Implementation Engineer can confidently cable the DFS power supplies into the available
120V PDU connections without sacrificing any performance, redundancy, or hardware lifespan. It is a fully supported, permanent configuration.
NEW QUESTION # 123
During an intra-series upgrade from //XR3 to //XR4, which command should the Implementation Engineer run to verify host connectivity before removing the secondary controller?
- A. host_connectivity --hosts
- B. purehost list --hostless
- C. iobalance --sampletime 30
Answer: C
Explanation:
In a Non-Disruptive Upgrade (NDU), ensuring that the host is correctly multipathed and balancing I/O across all paths is critical before taking a controller down. If a host is only using paths to the controller about to be rebooted (CT0, for example), taking that controller offline would cause an outage.
The command iobalance --sampletime 30 (or its wrapper purehost monitor --balance) is the standard tool used during the upgrade procedure to validate this state.
* iobalance : This script samples the I/O throughput on all ports for a specified duration (e.g., 30 seconds).
* It analyzes the distribution of I/O. If it detects that I/O is heavily skewed or missing entirely on the
"secondary" paths (the ones that will survive the reboot), it flags a warning.
* This allows the Implementation Engineer to pause and remediate the host multipathing configuration (e.
g., fixing a bad cable or zoning issue) before proceeding with the controller removal, ensuring the NDU remains truly non-disruptive.
NEW QUESTION # 124
An Implementation Engineer is installing the first DirectFlash Shelf (DFS) on a FlashArray//XR4 controller.
Which ports should the Implementation Engineer use for the connection?
- A. ETH 18/19
- B. ETH 10/11
- C. ETH 0/1
- D. ETH 6/7
Answer: A
Explanation:
When adding external capacity to a Pure Storage FlashArray via a DirectFlash Shelf (DFS), Implementation Engineers must adhere to strict, high-speed networking port assignments to ensure maximum backend throughput. Unlike older Fibre Channel or basic SAS expansion shelves that use dedicated SAS cabling, a modern DFS relies on massive 50GbE or 100GbE bandwidth using the NVMe-oF (RDMA over Converged Ethernet - RoCE) protocol to maintain NVMe-level speeds across the external fabric.
According to the official FlashArray//XR4 Port Usage and Definitions hardware matrix, the onboard 100GbE RoCE ports explicitly dedicated to the first loop of a DirectFlash Shelf are physically located on the controllers and identified within the Purity operating system as ETH 18 and ETH 19 .
These specific ports are hardware-optimized to handle the extreme backend IOPS generated by the external DirectFlash Modules communicating back to the primary chassis. Utilizing standard 1GbE/10GbE management/replication ports (such as ETH 0/1) or other generic PCIe Ethernet host interfaces (such as ETH
10/11) is unsupported for the primary DFS backend loop. Plugging the shelf into the wrong ports will result in cabling validation failures during the hardware_check.py execution, preventing the new capacity from being recognized by the array.
NEW QUESTION # 125
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