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NEW QUESTION # 22
RFC2307 enables cross-protocol support for which two protocols?
Answer: C
Explanation:
Understanding RFC2307: RFC2307 is an extension to the LDAP (Lightweight Directory Access Protocol) schema that allows for the storage of Unix-style information (POSIX attributes) within a directory service, most commonly Microsoft Active Directory. These attributes include things like uidNumber (User ID), gidNumber (Group ID), and login shells.
The Cross-Protocol Challenge: In a Unified Storage environment where the same data needs to be accessed by both Windows clients (using the SMB protocol) and Linux/Unix clients (using the NFS protocol), the storage array must be able to map a Windows Security Identifier (SID) to a Unix UID/GID.
How Pure Uses It: When an administrator enables RFC2307 support in Purity//FA File Services, the FlashArray can query Active Directory to retrieve these POSIX attributes. This creates a 1:1 mapping between the Windows user and the Unix identity.
The Benefit: This mapping ensures that a user can create a file via SMB and another user (or the same user on a different system) can access or modify that same file via NFS while maintaining consistent permission enforcement and ownership records. Without this (or a similar mapping service like NIS or local files), cross-protocol access often results in permission "Mapping" errors or files being owned by "nobody."
NEW QUESTION # 23
What is unified storage for Pure?
Answer: A
Explanation:
Defining Unified Storage: In the storage industry, "Unified Storage" refers to a single storage platform that can simultaneously serve data over both block-level and file-level protocols.
The Pure Storage Approach: Historically, FlashArray was a high-performance block-only array. However, with the introduction of FlashArray File Services, Pure transitioned to a unified architecture. This means the same hardware (FlashArray//X, //C, or //XL) and the same management interface (Purity) handle both types of workloads.
Protocol Support:
Block Protocols: Fibre Channel (FC), iSCSI, and NVMe-over-Fabrics (NVMe-oF).
File Protocols: NFS (Network File System) and SMB (Server Message Block).
Why this is "Unified": * Shared Pool of Resources: Unlike older legacy systems that used "file gateways" or separate hardware heads for NAS, Pure's unified storage shares a single global pool of flash memory and deduplication metadata.
Ease of Management: Administrators don't need to manage two different systems. You can create a Volume (Block) or a File System (File) from the same "Add" menu in the GUI.
Why Options A and B are incorrect: * Option A only describes the File side of the equation.
Option B only describes the Block side of the equation.
Only Option C accurately captures the combination of both paradigms, which is the definition of "Unified."
NEW QUESTION # 24
What is the best practice for configuring VMFS UNMAP for ESXi 6.7 or later?
Answer: C
Explanation:
What is UNMAP?: UNMAP (SCSI command 0x42) is the mechanism that allows a host (like ESXi) to inform the storage array that specific blocks of data are no longer in use (e.g., after a VM is deleted or moved). This is critical for Pure Storage because it allows the array to reclaim that space and maintain high data reduction ratios.
Evolution in ESXi: In versions prior to 6.5, UNMAP was a manual process executed via the CLI. Starting with ESXi 6.7, VMware introduced Automatic Space Reclamation, which runs in the background.
The Pure Storage Recommendation: Pure Storage recommends setting the reclamation priority to Auto with Low Priority.
Low Priority: This ensures that the UNMAP commands are sent to the FlashArray at a steady, manageable rate (roughly up to 25 MB/s to 100 MB/s depending on the Purity version). Because FlashArrays are built on a high-performance metadata engine, "Low Priority" is more than sufficient to keep up with even high-churn environments without causing any contention for active application I/O.
Why avoid High Priority (Option B)?: Setting it to high priority or using a fixed high-burst rate can lead to "bursty" SCSI traffic. While the FlashArray can handle the load, it is considered a best practice to keep background maintenance tasks like space reclamation at a lower priority to ensure the "Big Three" (latency, bandwidth, IOPS) for production workloads remain optimized.
Verification: You can verify that UNMAP is working by looking at the Data Reduction metrics in the Purity GUI or Pure1. If the "Thin Provisioning" or "Reclaimed" numbers are increasing after file deletions, the host is correctly communicating its freed space to the array.
NEW QUESTION # 25
Which of the following statements regarding REST APIv1 and REST APIv2 is true?
Answer: C
Explanation:
API Evolution: Pure Storage introduced REST API 2.x to provide a more scalable, standardized, and performant way to automate FlashArray management. It uses a different authentication method (OAuth2 with API Clients) compared to the API Token-based method in 1.x.
Feature Freeze on 1.x: As of Purity 6.x and beyond, Pure Storage has designated REST API 1.x as "Legacy." While 1.x is still supported for backward compatibility to ensure older scripts don't break, all new Purity features (such as specialized ActiveDR commands, advanced File Services, or new hardware capabilities) are only developed and exposed via REST API 2.x.
Side-by-Side Support: Contrary to option C, both versions are supported side-by-side on the same array. An administrator can run a script using 1.x for volume creation and another script using 2.x for performance monitoring simultaneously without contacting support.
Feature Parity: REST API 2.x has long since reached and exceeded the capabilities of 1.x. It offers improved filtering, pagination, and a more consistent object model (e.g., /volumes instead of multiple nested endpoints).
Best Practice: Pure Storage strongly recommends that all new automation projects use REST API 2.x to ensure access to the full suite of Purity features and to future-proof infrastructure-as-code (IaC) workflows.
NEW QUESTION # 26
Which command provides the negotiated port speed of an ethernet port?
Answer: C
Explanation:
On a Pure Storage FlashArray, Ethernet ports operate at both a physical hardware layer and a logical network configuration layer. If you need to verify the actual physical negotiated port speed of an Ethernet port (for example, verifying if a 25GbE port negotiated down to 10GbE due to switch configurations or cable limitations), you must query the hardware layer directly.
The command purehw list --all --type eth interacts directly with the physical NIC hardware components to report their true link status, health, and dynamically negotiated hardware link speed.
Here is why the other options are incorrect:
purenetwork eth list -- all (B): The purenetwork command suite is primarily focused on the logical Layer 2/Layer 3 networking stack. It is used to configure and list IP addresses, subnet masks, MTU sizes (Jumbo Frames), and routing, rather than focusing on the physical hardware negotiation details of the NIC itself.
pureport list (A): The pureport command suite is specifically used for managing and viewing storage protocol target ports. An administrator would use this to list the array's Fibre Channel WWNs or iSCSI IQNs to configure host zoning or initiator connections, not to verify Ethernet link negotiation speeds.
NEW QUESTION # 27
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