Pass the EMC PowerStore Deploy D-PST-DY-23 Questions and answers with CertsForce

1. Create the Host

Navigate to Compute > Hosts.

Click Add Host.

Enter the host name: ESXi3

Select iSCSI as the protocol.

Click Next.

Select the appropriate Network and Port Group for iSCSI connectivity.

Click Add.

2. Create the Volume

Navigate to Storage > Volumes.

Click Add Volume.

Enter the volume name: SQL_Datastore

Set the volume size to 5 TB.

Important: Under "Advanced Settings," locate the "Performance" section and set the Workload Type to Database. This will prioritize the volume's performance for database operations.

Click Add.

3. Map the Volume to the Host

On the Volumes page, locate the newly created SQL_Datastore volume.

Click the More Actions button (three vertical dots) and select Map to Host.

Choose the ESXi3 host.

Important: In the "LUN ID" field, enter 101 to assign the desired LUN number.

Click Map.

Verification

After completing these steps, go back to the Hosts page and select ESXi3.

Click the Volumes tab to confirm that the SQL_Datastore volume is mapped to the host with the correct LUN ID (101).

Key Considerations

iSCSI Network Configuration: Ensure that your iSCSI network is properly configured with the necessary VLANs and IP addresses.

Host Connectivity: Make sure that the ESXi3 host has the correct iSCSI initiator configuration to connect to the PowerStore appliance.

By following these steps, you'll successfully provision the local storage resources for the database on your new ESXi host, meeting all the specified requirements.

NFSv4 and ESXi Host Access

When provisioning a VMware file system (like a datastore) from a NAS server using NFSv4, the ESXi host needs specific permissions to function correctly:

Read/Write Access: This is fundamental. The ESXi host must be able to both read data from and write data to the datastore. This is essential for storing virtual machine files, writing logs, and managing the overall file system.

Allow Root Access: ESXi hosts require root-level access to the NFS datastore. This is critical for:

Creating and Managing VMDKs: Root access is necessary to create, delete, and modify virtual machine disk files (VMDKs) on the datastore.

Managing VM Files: The host needs root permissions to manage various virtual machine configuration files and logs stored on the datastore.

Maintaining File System Integrity: Root access allows the ESXi host to perform essential file system operations to ensure consistency and prevent data corruption.

Why Other Options Are Incorrect

A. Read/Write: While read/write access is necessary, it's not sufficient on its own. Root access is also required.

B. Kerberos with Integrity: Kerberos is a security protocol that can be used with NFSv4 for authentication, but it's not a basic access requirement for ESXi hosts. While Kerberos enhances security, it's not strictly mandatory for basic functionality.

C. Kerberos with Encryption: Similar to Kerberos with integrity, encryption adds another layer of security but isn't a fundamental requirement for ESXi host access to an NFSv4 datastore.

Important Considerations

NFS Owner: When configuring NFSv4 on PowerStore, you typically set the "NFS Owner" to "root" for ESXi hosts. This ensures that the host has the necessary permissions.

no_root_squash: On some NAS systems, you might need to configure the no_root_squash option in the NFS export settings. This option prevents the NAS server from mapping the root user on the ESXi host to a less privileged user, ensuring that the host retains root access to the NFS share.

Dell PowerStore References

PowerStore: Create a File System for NFS Exports: This document in the PowerStore documentation provides guidance on creating and configuring file systems for NFS exports, including details about setting NFS permissions and the NFS owner.

Two switches act like a single switch using VLTi.

VLTi is required for Link Aggregation Control Protocol (LACP) connectivity

between the nodes, and:

- Allows a single device to use a LAG across two upstream switches.

- Assures high availability.(Page 18)

A Link Aggregation Group (LAG) is a combined collection of physical

network ports on a switch or host.

Ethernet LAG implementations may follow vendor-dependent or an open

standard such as Link Aggregation Control Protocol (LACP).(Page141 POWERSTORE 3.0 POWERSTORE T IMPLEMENTATION)

In practice, when someone refers to "Dynamic LAG," they are likely speaking about a setup using LACP or something very similar. The main difference would be in how the terms are used within the context of different vendors' documentation or networking practices. However, for all practical purposes, in most environments, LACP and Dynamic LAG would be used to achieve the same goal of dynamic link aggregation with automatic configuration and fault tolerance.