配置：Linux 的 Device Mapper 多路径

概览

MD3600f 系列存储阵列使用 Linux 操作系统软件框架 （名为 Device Mapper (DM)）以在 Linux 主机服务器上启用多路径功能。DM 多路径功 能由驱动程序和公用程序的组合提供。本章介绍如何使用这些公用程序在 Linux 系统上完成启用 MD3600f 系列存储阵列的过程。

注：Device Mapper 技术取代了名为 MPP 的早期专用技术。MPP 用于为上一

代 MD 产品 （MD3000 系列存储阵列）启用多路径。

注：通过在服务器上运行 MD3600f 系列资源介质安装程序并选择 Full （完 整）或 Host （主机）安装选项，可将所需的 Device Mapper 软件组件安装在 Linux 主机服务器上。有关详细的安装过程，请参阅位于 support.dell.com/manuals 处的 Dell PowerVault MD3600f 和 MD3620f 存储阵列部 署指南。

使用 DM 多路径功能的优点包括：

•检测路径故障并将 I/O 重新路由至其他可用路径

•在路径恢复后重新验证有故障的路径

•利用多个可用路径使性能最大化

•根据路径状态和错误条件重新配置路径使用

•将多个设备节点统一为单个逻辑多路径设备节点

•识别新的多路径 LU 并自动配置新的多路径节点

•在 /dev/mapper/ 下为 DM 设备提供永久的设备名称

使用 DM 多路径设备

注：如果使用或修改多路径设备节点以外的任何节点，则可能导致阵列或 文件系统故障，包括断开与阵列的通信以及文件系统损坏。避免访问多路径 设备之外的任何设备。

配置：Linux 的Device Mapper 多路径

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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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