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>> FlashArray-Implementation-Specialist認定資格 <<
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質問 # 183
After completing an HWNDU, what command should an Implementation Engineer run to confirm if any open alerts are transitioning to a 'closing' status?
正解：C
解説：
During and after a Hardware Non-Disruptive Upgrade (HWNDU), the FlashArray may generate various alerts related to component removals, path failovers, or temporary redundancy reductions. Once the upgrade is physically complete and the software has stabilized, the Implementation Engineer must verify that the array has returned to a fully healthy state.
The command purealert list is the primary tool for this verification. It displays the current table of active alerts on the system.
* If the array is healthy, this list should be empty or contain only "Info" level messages.
* If the system is still recovering, you might see alerts with a status indicating they are "closing" or
"downgrading" as the conditions resolve (e.g., "Controller redundancy restored").
pureaudit list shows the history of user commands, not system health alerts. puremaintenance is not a standard command for checking alert status. Therefore, purealert list is the correct command to validate that no critical hardware or software issues remain active after the maintenance window.
質問 # 184
An Implementation Engineer performs a controller upgrade. What command should the Implementation Engineer run to check I/O health?
正解：C
解説：
During a Hardware Non-Disruptive Upgrade (HWNDU), such as a controller swap, ensuring that the frontend host multi-pathing is perfectly healthy before taking a node offline is the single most critical safety check. If an Implementation Engineer initiates a failover while host I/O is unbalanced or single-pathed, it will cause an immediate All-Paths-Down (APD) event and crash the customer's applications.
While standard commands like pureport list --initiator are excellent for verifying that the physical fibre channel or iSCSI links are logged in, they do not confirm that data is actively flowing across them. To truly validate I/O health and multipath distribution, the engineer must run the purehost monitor --balance command.
This specialized CLI tool forces the FlashArray to take a brief, active sample of incoming read and write commands (defaulting to a 5-second interval) across all host initiators. It calculates the traffic distribution and displays the relative percentage of I/Os for each initiator path. A well-balanced, healthy host utilizing proper MPIO policies (like VMware's Round Robin) will show traffic evenly distributed across all available paths within a few percentage points. If the output reveals that 100% of the traffic is pinned to a single controller's port, the engineer immediately knows there is a zoning or host-side MPIO misconfiguration that must be resolved before proceeding with the upgrade.
質問 # 185
Upon completion of a hardware upgrade activity, which command should be used to unset the maintenance tag?
正解：A
解説：
The command purealert untag --maintenance removes the maintenance tag after a hardware upgrade, signaling the system that maintenance mode has ended.
質問 # 186
An Implementation Engineer is onsite to replace a 22TB data pack with a new 91TB (10 x 9.1TB) data pack in a FlashArray//X90R5 Gen 2. The array is at 90% capacity. It currently has 22TB (10 x 2.2TB) in slots 0-9 and 63TB (14 x 4.5TB) in slots 10-23, configured as two separate write groups.
What is a supported method to proceed with the planned capacity migration?
正解：B
解説：
When executing a capacity migration or consolidation on a highly utilized Pure Storage FlashArray (such as an //X90 Gen 2 at 90% capacity), physical and logical space limitations dictate the required procedure. The FlashArray chassis only contains 24 front-facing capacity drive bays. In this scenario, the chassis is fully populated with 10 drives in slots 0-9 and 14 drives in slots 10-23.
Because all physical chassis slots are occupied, there is nowhere to physically insert the new 91TB (10 x 9.1 TB) DirectFlash Modules. Furthermore, because the array is at 90% capacity, there is insufficient logical free space remaining to evacuate the 22TB data pack into the existing 63TB pack's free capacity. Standard evacuation requires the system to non-disruptively move data off the target drives before they can be safely removed, which is mathematically impossible here without external capacity.
To resolve this, the officially supported method is to install a temporary "swing shelf" (Option B). A swing shelf acts as a temporary expansion vessel. The Implementation Engineer physically racks the swing shelf, connects it to the array, and inserts the new 91TB data pack into it. Purity can then safely evacuate the data from the old 22TB chassis data pack onto the new drives in the swing shelf. Once the evacuation completes, the old drives are decommissioned and removed, the new 91TB drives are seamlessly relocated into the chassis slots 0-9, and the swing shelf is removed and returned.
質問 # 187
A customer has ordered several FlashArrays and wants to have ActiveCluster configured. What is the maximum quantity of arrays supported with ActiveCluster?
正解：A
解説：
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.
質問 # 188
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