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Configuration: Device Mapper Multipath for Linux

Overview

The MD3600f Series storage array uses a Linux operating system software framework, known as Device Mapper (DM), to enable multipath capabilities on Linux Host Servers. The DM multipath functionality is provided by a combination of drivers and utilities. This chapter describes how to use those utilities to complete the process of enabling an MD3600f Series storage array on a Linux system.

The Device Mapper technology replaces an earlier, proprietary technology, known as MPP. MPP was used to enable multipathing for a previous MD generation, the MD3000 Series of storage arrays.

NOTE: The required Device Mapper software components are installed on a Linux host server by running the MD3600f Series Resource media installation program on the server, and selecting either the Full or Host install option. For detailed installation procedures see the Dell PowerVault MD3600f and MD3620f storage arrays Deployment Guide.

Benefits of using DM Multipath include:

•Detects path failure and re-routes I/O to other available paths

•Revalidates failed paths after path restoration

•Utilizes multiple available paths to maximize performance

•Reconfigures path usage based on path states and error conditions

•Unifies multiple device nodes into a single logical multipath device node

•Indentifies a new multipathed LU and automatically configures a new multipath node

•Provides device name persistency for DM devices under /dev/mapper/

Configuration: Device Mapper Multipath for Linux

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MD3620F, MD3600f specifications

Dell's MD3620F and MD3600F storage arrays are designed for businesses seeking dependable, high-performance storage solutions tailored to meet the demands of modern data management. These models offer a blend of scalability, efficiency, and advanced features, making them well-suited for a range of applications, from virtual environments to critical database operations.

One of the primary features of the MD3620F and MD3600F is their support for a hybrid storage architecture. This approach allows organizations to combine flash storage with traditional hard disk drives (HDDs) to optimize performance and cost. The MD3620F focuses heavily on all-flash configurations, delivering exceptional speed and lower latency, ideal for I/O-intensive workloads.

Scalability is another hallmark of these storage solutions. The MD3600F allows users to scale up to 120 drives, providing robust capacity to meet growing data needs. The MD3620F is engineered for environments where data availability and speed are paramount, with support for high IOPS (Input/Output Operations Per Second) and consistent performance under stress.

In terms of data management, both systems integrate with Dell’s proprietary software, which enhances operational efficiency through features like automated tiering. This technology optimizes data placement between different storage types based on access frequency, ensuring that hot data is readily available while reducing costs associated with less critical data.

Reliability is crucial for businesses that depend on their storage systems. The MD3620F and MD3600F come equipped with advanced data protection mechanisms, such as RAID support, which safeguards against data loss, and snapshot capabilities that provide point-in-time copies of data. Moreover, these solutions include hot-swappable components, ensuring minimal downtime for maintenance and repairs.

Connectivity is also a strong suit of these storage arrays. They support multiple connectivity options, including SAS and iSCSI, allowing for flexible integration into existing IT infrastructures. This adaptability enhances their appeal to a wide range of enterprise environments.

In summary, the Dell MD3620F and MD3600F stand out as robust storage solutions with a combination of hybrid and all-flash configurations, scalability, advanced data management tools, and enhanced reliability features. These characteristics make them ideal for organizations looking to enhance their data storage capabilities while maintaining high performance and efficiency.
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