多路径软件

多路径软件 （也称为故障转移驱动程序）是驻留在主机服务器上的软件， 可管理主机服务器和存储阵列之间的冗余数据路径。

多路径软件确定是否存在多条至虚拟磁盘的路径，并建立至该磁盘的首选 路径。如果首选路径中的任何组件出现故障，多路径软件则会自动将 I/O 请求重新路由至备用路径，以便存储阵列继续运行而不中断。

注：多路径软件可在 MD3600f 系列资源介质上找到。

首选和备用控制器及路径

首选控制器是 RAID 控制器模块，指定为虚拟磁盘或磁盘组的所有者。 在创建虚拟磁盘后，会由 MDSM 自动选择首选控制器。而且可在创建虚 拟磁盘后更改其首选 RAID 控制器模块所有者。如果主机仅连接至一个 RAID 控制器模块，则必须手动将首选所有者分配至主机可访问的 RAID 控制器模块。

在首选控制器出现以下情况时，虚拟磁盘的所有权会从首选控制器移动至 辅助控制器 （也称为备用控制器）：

•物理卸下

•更新固件

•涉及导致备用控制器故障转移的事件

首选 RAID 控制器模块用于访问磁盘或主机服务器的路径称为首选路径；冗 余路径称为备用路径。如果故障造成首选路径不可访问，存储阵列将自动使 用备用路径来访问数据。当此状况发生时，机柜状态 LED 闪烁琥珀色。

虚拟磁盘所有权

MDSM 可用于自动构建和查看虚拟磁盘。其使用最佳设置来分拆磁盘组。 在创建虚拟磁盘后，会将其分配至备用 RAID 控制器模块。该默认分配可 提供简单的方法，以实现 RAID 控制器模块的工作负载的负载平衡。

稍后可修改所有权，以根据实际使用平衡工作负载。如果未手动平衡虚拟 磁盘所有权，就可能让一个控制器进行大部分工作，而让其他控制器处于 闲置状态。因此需要限制磁盘组中的虚拟磁盘的数目。如果磁盘组中有多 个虚拟磁盘，则请考虑：

•每个虚拟磁盘对同一磁盘 组中的其他虚拟磁盘的影响。

•每个虚拟磁盘的使用方式。

•在一天的不同时间，不同虚拟磁盘会有更高的使用率。

规划：MD3600f 系列存储阵列术语和概念

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Dell MD3620F, MD3600f manual 多路径软件, 首选和备用控制器及路径, 虚拟磁盘所有权
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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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