热备用和重建

保护数据的其中一条有效策略是将存储阵列中的可用物理磁盘分配为热备 用设备。热备用会将另一级别的容错添加到存储阵列。

热备用是一个空闲、已通电、备用的物理磁盘，已准备好在磁盘出现故障 时立即投入使用。如果在冗余虚拟磁盘遇到物理磁盘故障的机柜中定义了 热备用，则 RAID 控制器模块会自动启动降级虚拟磁盘的重建。如果没有 定义热备用，则 RAID 控制器模块将在更换物理磁盘插入存储阵列时启动 重建操作。

全局热备用

MD3600f 系列支持全局热备用。全局热备用可更换具有冗余 RAID 级别 的所有虚拟磁盘中出现故障的物理磁盘，只要热备用的容量大于或等于其 所更换物理磁盘中已配置容量的大小 （包括其元数据）。

热备用操作

物理磁盘出现故障时，虚拟磁盘会使用可用的热备用自动重建。安装备用 物理磁盘后，数据将从热备用复制回备用物理磁盘。此功能称为回写。默 认情况下， RAID 控制器模块会根据系统中物理磁盘的数目和容量来自动 配置热备用的数目和类型。

热备用可能具有以下状态：

•备用的热备用—是已分配为热备用的物理磁盘，可用于接管任何出现 故障的物理磁盘。

•正在使用的热备用—是已分配为热备用的物理磁盘，目前正在更换出 现故障的物理磁盘。

热备用驱动器保护

您可以使用热备用物理磁盘对 RAID 级别 1 或 RAID 级别 5 磁盘组中出现 的物理磁盘故障提供附加的数据保护。如果在物理磁盘出现故障时热备用 物理磁盘可用，则 RAID 控制器模块可使用冗余数据从出现故障的物理磁 盘重建数据到热备用物理磁盘。当您物理更换出现故障的物理磁盘后，系 统将进行从热备用物理磁盘到更换物理磁盘的回写操作。

如果存储阵列中有受保护的磁盘组和安全型磁盘组，则热备用物理磁盘必 须匹配磁盘组的安全保护功能。例如，非安全型物理磁盘不能用作受保护 的磁盘组的热备用。

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配置：磁盘组和虚拟磁盘

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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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