SAN Performance Tuning

C H A P T E R 1 7

This chapter provides information and instructions for improving the performance of the various storage area network (SAN) components in your network. All procedures in this document require administrator access permissions.

This chapter provides information about the following components:

•Dell OpenManage Data Managed Node Data Agent for 650F and 651F storage systems

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Running multiple copies of Data Managed Node Data Agent in a SAN

RAID considerations for 650F and 651F storage systems

Cache size for 650F and 651F storage systems

Setting the execution throttle

Setting the PowerVault 650F and 651F cache water mark

Network timeouts

Dell OpenManage Data Managed Node Data Agent for 650F and 651F Storage Systems

When the Dell OpenManage Application Transparent Failover (ATF) software is not installed, the Dell OpenManage Data Managed Node Data Agent’s commands for polling and configuring the 650F and 651F storage systems are intermixed with the normal input/output (I/O) activities that are being generated by the system application programs. This intermixing of the different types of I/O causes the management I/O to be delayed, which causes the Dell PowerVault manager applications to time out while communicating with the array. If a system is experiencing I/O time-out errors during heavy I/O activity, you can improve performance by changing the agent man- agement I/O path to go through a dedicated logical unit number (LUN) rather than the physical drive device driver. Change the entries in the Data Agent Configurator’s Device window to specify the dedicated LUN by performing the following steps:

1.Click Start—> Programs—> Dell OpenManage PowerVault Manager—> Data Managed Node—> Data Agent.

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650F, 651F specifications

The Dell 651F and 650F are notable entries in the Dell family of networking switches, designed to meet the increasingly demanding requirements of modern enterprises. Built to enhance network performance and reliability, these switches embody a variety of features and technologies that cater to both small businesses and large organizations.

At the heart of the Dell 651F and 650F is their robust hardware architecture. Both models come equipped with high-performance processors, enabling them to efficiently handle substantial data traffic. The Dell 651F features a higher port density compared to the 650F, making it ideal for environments where connectivity and bandwidth are critical. Each switch supports multiple 10G and 25G SFP+ ports, providing flexibility for organizations that require scalable network solutions.

One of the standout characteristics of these switches is their advanced Layer 3 routing capabilities. This feature allows for more precise traffic management, enhancing overall network efficiency. Additionally, both models support various routing protocols, including OSPF, BGP, and RIP, enabling them to seamlessly integrate into existing IT infrastructures.

Security is a primary concern for any organization, and Dell has taken significant measures to address it in the 651F and 650F switches. They support 802.1X authentication and have built-in Access Control Lists (ACLs), helping to safeguard sensitive data while preventing unauthorized access. Furthermore, both models are compliant with various industry standards, ensuring that they can protect networks against emerging threats.

Management and monitoring features also play a crucial role in the functionality of these switches. The Dell Networking OS provides an intuitive interface, which simplifies configuration and management tasks. With features like simple command-line interface (CLI) access and a web-based GUI, network administrators can easily troubleshoot and optimize performance.

In terms of power efficiency, the Dell 651F and 650F are designed with energy-saving technologies that minimize operational costs. They support Power over Ethernet (PoE), allowing for the connection of various devices without the need for separate power sources.

In conclusion, the Dell 651F and 650F switches represent a powerful combination of performance, security, and efficiency. Their advanced features, versatile connectivity options, and user-friendly management tools position them as an excellent choice for organizations looking to enhance their networking capabilities. As businesses continue to evolve and demand more from their technology, Dell’s offerings remain ready to meet those needs.