Virtual Disk Read/Write Permissions

After the virtual disk copy is complete, the target virtual disk automatically becomes read-only to the hosts. The target virtual disk rejects read and write requests while the virtual disk copy operation has a status of Pending or In Progress or if the operation fails before completing the copy. Keep the target virtual disk Read-Only enabled if you want to preserve the data on the target virtual disk for reasons such as the following:

•If you are using the target virtual disk for backup purposes.

•If you are using the data on the target virtual disk to copy back to the source virtual disk of a disabled or failed snapshot virtual disk.

If you decide not to preserve the data on the target virtual disk after the virtual disk copy is complete, change the write protection setting for the target virtual disk to Read/Write.

To set the target virtual disk read/write permissions:

1In the AMW, select Virtual Disk→ Copy→ Copy Manager. The Copy Manager window is displayed.

2Select one or more copy pairs in the table.

3Perform one of these actions:

•To enable Read-Only permission, select Change→ Target Virtual Disk Permissions→ Enable Read-Only.

NOTE: Write requests to the target virtual disk are rejected when the Read- Only permission is enabled on the target virtual disk.

•To disable Read-Only permission, select Change→ Target Virtual Disk Permissions→ Disable Read-Only.

Virtual Disk Copy Restrictions

Before you perform any virtual disk copy tasks, understand and adhere to the restrictions listed in this section. The restrictions apply to the source virtual disk, the target virtual disk, and the storage array.

•While a virtual disk copy has a status of In Progress, Pending, or Failed, the source virtual disk is available for read I/O activity only. After the virtual disk copy is complete, read and write I/O activity to the source virtual disk are permitted.

Configuration: Premium Feature—Virtual Disk Copy

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MD3200i, MD3220i specifications

The Dell MD3220i and MD3200i are part of Dell's extensive line of modular storage solutions, designed to support organizations in optimizing their data management and scalability requirements. These models offer reliable performance and flexible features, making them suitable for various workloads including virtualization, cloud storage, and disaster recovery.

One of the standout features of the MD3220i and MD3200i is their support for iSCSI storage networking. By utilizing the Internet Small Computer Systems Interface (iSCSI) protocol, these systems provide organizations with a cost-effective way to connect their storage over existing network infrastructure, enabling efficient data transfers and management.

Both models are equipped with dual controllers that ensure high availability and failover capabilities, which are crucial for meeting uptime requirements in mission-critical environments. The dual controllers also facilitate load balancing and increase overall system performance, as they allow multiple paths to the storage, enhancing I/O performance.

Scalability is another key characteristic of the MD3220i and MD3200i. These storage arrays can be expanded to meet growing storage demands, supporting up to 240TB of raw capacity with up to 16 additional expansion enclosures. This flexibility allows organizations to start with a smaller configuration and grow their storage capabilities without a complete overhaul of the existing infrastructure.

The units also support multiple disk types, including traditional spinning disks, solid-state drives (SSDs), and a combination of both. This versatility enables users to tailor storage configurations to their specific performance and budgetary needs. Furthermore, the systems feature advanced data management technologies such as snapshots and remote replication, providing essential tools for data protection.

With their ease of management, the MD3220i and MD3200i are designed for straightforward configuration and operation. The intuitive management interfaces allow IT professionals to monitor performance, configure storage, and manage data effectively, ensuring businesses can maintain optimal system availability.

In summary, the Dell MD3220i and MD3200i are robust, scalable, and versatile storage solutions that cater to diverse organizational needs. Their integrated technologies, such as iSCSI support, dual controller architecture, and advanced data management features, make them an ideal choice for modern data centers looking to enhance storage capabilities while ensuring reliability and performance.
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