Using DM Multipathing Devices

NOTE: Using or modifying any nodes other than the multipathing device nodes can result in array or file system problems, including loss of communication with the array and corruption of the file system. Avoid accessing any device other than the multipathing device.

NOTE: After creating a partition on a multipathing device, all IO operations, including filesystem creation, raw I/O and file system I/O, must be done through the partition node, not the multipathing device nodes.

Prerequisites

The following tasks must be completed before proceeding. For more information about step 1and step 2, see the MD3600f and MD3620f storage arrays Deployment Guide. For more information about step 3, see "Creating Virtual Disks" on page 102.

1Install the host software from MD3600f Series resource media—Insert the resource media to start the installation of Modular Disk Storage Manager (MDSM).

NOTE: Red Hat install of 5.x needs a remount of the DVD media to make contents executable.

2Reboot when prompted by the install program—The installation program prompts for and needs a reboot at completion of install.

3Create and map virtual disks using MDSM—After configuring the arrays run the MDSM to create and map virtual disks.

Using the MDSM software:

1Map the host server to the MD3600f Series storage array.

2Create the Virtual Disks.

3Map newly created arrays to your host server.

NOTE: Any array configured with MDCU automatically adds to the list of Devices in the PowerVault Modular Disk Storage Manager Enterprise Management Window (EMW).

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Configuration: Device Mapper Multipath for Linux

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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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