Table of Contents
Question
You are asked to configure a small environment for a branch office. The customer has two new VMware ESXi hosts and a NetApp FAS2750 for the site. They want to allocate 10 GB for their iSCSI network to be used for datastores. However, they do not want to purchase any new switches for the environment. In this scenario, which statement is correct?
A. The SMB protocol will need to be used.
B. Configure direct attached connections between the two hosts and storage.
C. The environment will have to be configured with 1 Gb networking.
D. 10 Gb switches are required for this configuration.
Answer
B. Configure direct attached connections between the two hosts and storage.
Explanation
The correct answer is B. Configure direct attached connections between the two hosts and storage.
In this scenario, the customer wants to allocate 10 GB for their iSCSI network, but they do not want to purchase any new switches. This means that they are limited to using the existing 1 GB network. In order to achieve 10 GB bandwidth, the only option is to configure direct attached connections between the two hosts and storage.
Direct attached connections can be made using either SAS or Fibre Channel cables. SAS is a more common choice for small environments, as it is less expensive and easier to configure. Fibre Channel is a better choice for larger environments that require high performance and low latency.
To configure direct attached connections, you will need to connect the hosts and storage to each other using SAS or Fibre Channel cables. You will also need to configure the hosts to use the direct attached connections. This can be done in the host BIOS or in the host operating system.
Once the direct attached connections are configured, you will be able to create iSCSI LUNs on the storage and attach them to the hosts. The hosts will then be able to access the storage at 10 GB bandwidth.
Here are the reasons why the other options are not correct:
- A. The SMB protocol will not be able to provide 10 GB bandwidth. SMB is a file sharing protocol that is not designed for high performance. It is typically used for small file transfers between hosts and storage.
- C. The environment can be configured with 1 Gb networking, but it will not be able to achieve 10 GB bandwidth. 1 Gb networking is the standard for most small environments. It is not possible to achieve 10 GB bandwidth using 1 Gb networking.
- D. 10 Gb switches are not required for this configuration. Direct attached connections can be used to achieve 10 GB bandwidth without the need for 10 Gb switches.
Reference
- WP-7354: NetApp ONTAP reliability, availability, serviceability, and security
- RTF Template (netapp.com)
- Solved: FAS2552 1GbE Ports – NetApp Community
- TR-4689 – MetroCluster IP Architecture and Design (netapp.com)
- NetApp FAS Series: FAS2750 and FAS2820 | NetApp
- Best Practices for Network Configuration with NetApp Storage Systems – NetApp Knowledge Base
- Certified Implementation Engineer—SAN Specialist | NetApp
- Certification Programs – NCIE NCDA & more | NetApp
- NetApp Certified Implementation Engineer – E-Series | NetApp
- Direct Attached Storage – an overview | ScienceDirect Topics
- iSCSI vs NFS: Which Protocol to Use for Shared Datastore? (nakivo.com)
- Best Practices For Running VMware vSphere On iSCSI | VMware
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