Changing the Segment Size of a Virtual Disk

You can change the segment size on a selected virtual disk. During this operation, I/O performance is affected, but your data remains available.

Guidelines to proceed with changing the segment size:

•You cannot cancel this operation after it starts.

•Do not start this operation unless the disk group is in Optimal status.

•MDSM determines the segment size transitions that are allowed. Segment sizes that are inappropriate transitions from the current segment size are unavailable on the menu. Allowed transitions usually are double or half of current segment size. For example, if the current virtual disk segment size is 32 KB, a new virtual disk segment size of either 16 KB or 64 KB is allowed.

NOTE: The operation to change the segment size is slower than other modification operations (for example, changing RAID levels or adding free capacity to a disk group). This slowness is the result of how the data is reorganized and the temporary internal backup procedures that occur during the operation.

The amount of time that a change segment size operation takes depends on:

•The I/O load from the host

•The modification priority of the virtual disk

•The number of physical disks in the disk group

•The number of physical disk ports

•The processing power of the storage array RAID controller modules

If you want this operation to complete faster, you can change the modification priority, although this might decrease system I/O performance.

To change the segment size of a virtual disk:

1In the AMW, select the Logical tab and select a virtual disk.

2Select Virtual Disk→ Change→ Segment Size.

3Select the required segment size.

A message prompts you to confirm the selected segment size.

4Click Yes.

Configuration: Disk Groups and Virtual Disks

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Dell MD3200i, MD3220i Changing the Segment Size of a Virtual Disk, Select Virtual Disk→ Change→ Segment Size, 111
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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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