分段大小迁移, 虚拟磁盘容量扩充, 磁盘组扩充, 磁盘组碎片整理, 磁盘组操作限制

分段大小迁移

分段大小是指存储阵列在将数据写入下一个物理磁盘之前，在虚拟磁盘的单个物理磁盘上写入的数据量（以 KB 为单位）。分段大小的有效值为 8 KB、 16 KB、 32 KB、 64 KB、 128 KB、 256 KB 和 512 KB。

动态分段大小迁移可实现更改给定虚拟磁盘的分段大小。如果创建了虚拟磁盘，则根据 RAID 级别和预期使用等因素设置默认分段大小。如果分段大小的使用不符合需求，可更改默认值 (128 KB)。

考虑更改分段大小时，有两个情况说明了不同的限制方法：

•如果 I/O 活动超出分段大小，可增加分段大小以减少单次 I/O 需要的磁盘数。将单个物理磁盘用于单个请求可解放磁盘以使其为其他请求提供服务，尤其是在有多个用户访问数据库或存储环境时。

•如果在大型的单用户 I/O 环境（例如多媒体应用程序存储）中使用虚拟磁盘，那么可在将单个 I/O 请求用于单个数据磁条（分段大小乘以用于数据存储的磁盘组中的物理磁盘的数目）时优化性能。在这种情况下，多个磁盘用于相同请求，但每个磁盘只被访问一次。

虚拟磁盘容量扩充

在配置虚拟磁盘时，可根据期望存储的数据量选择容量。不过可能需要通过向磁盘组添加可用容量来增加标准虚拟磁盘的虚拟磁盘容量。这样可为新的虚拟磁盘创建更多未使用的空间，或者扩充现有虚拟磁盘。

磁盘组扩充

由于存储阵列支持可热插拔的物理磁盘，因此在存储阵列保持联机时可一次为每个磁盘组添加两个物理磁盘。在整个操作过程中，虚拟磁盘组、虚拟磁盘及物理磁盘上的数据都是可访问的。在整个磁盘组上动态地重新分配数据和增加的未使用可用空间。 RAID 属性也会整体重新应用于磁盘组。

磁盘组碎片整理

碎片整理可将磁盘组中的可用容量合并到一个连续区域。碎片整理不会更改数据在虚拟磁盘上的存储方式。

磁盘组操作限制

每个已安装的 RAID 控制器模块最多可拥有一个活动的并发磁盘组进程。该限制适用于以下磁盘组进程：

规划：MD3600f 系列存储阵列术语和概念

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.