Cabling the Enclosure, Redundancy vs. Nonredundancy

Cabling the Enclosure

You can connect up to 16 hosts and two expansion enclosures to the storage array.

To plan your configuration, complete the following tasks:

1Evaluate your data storage needs and administrative requirements.

2Determine your hardware capabilities and how you plan to organize your data.

3Calculate your requirements for the availability of your data.

4Determine how you plan to back up your data.

The iSCSI interface provides many versatile host-to-controller configurations. For the purposes of this manual, the most conventional topologies are described. The figures in this chapter are grouped according to the following general categories:

•Direct-attached solutions

•Network-attached (SAN) solutions

Redundancy vs. Nonredundancy

Nonredundant configurations, configurations that provide only a single data path from a host to the RAID enclosure, are recommended only for non-critical data storage. Path failure from a failed or removed cable, a failed NIC, or a failed or removed RAID controller module results in loss of host access to storage on the RAID enclosure.

Redundancy is established by installing separate data paths between the host and the storage array, in which each path is to different RAID controller modules. Redundancy protects the host from losing access to data in the event of path failure, because both RAID controllers can access all the disks in the storage array.

Direct-Attached Solutions

You can cable from the Ethernet ports of your host servers directly to your MD3000i RAID controller iSCSI ports. Direct attachments support single path configurations (for up to four servers) and dual path data configurations (for up to two servers) for both single and dual controller modules.

Single Path Data Configurations

With a single path configuration, a group of heterogeneous clients can be connected to the MD3000i RAID controller through a single physical Ethernet port. Because there is only the single port, there is no redundancy (although each iSCSI portal supports multiple connections). This configuration is supported for both single controller and dual controller modes.

Figure 2-1 and Figure 2-2 show the supported nonredundant cabling configurations to MD3000i RAID controller modules using the single path data configuration. Figure 2-1 shows a single controller array configuration. Figure 2-2 shows how four standalone servers are supported in a dual controller array configuration.

Hardware Installation

3000i specifications

The Dell 3000i is a powerful and versatile storage solution designed to meet the needs of modern businesses. Known for its flexibility and efficiency, this entry-level storage array offers a range of features that cater to small to medium enterprises and branch offices, providing them with reliable, scalable, and high-performance data management capabilities.

One of the standout features of the Dell 3000i is its impressive performance. It is powered by Dell's proprietary technology, enabling it to handle various workloads with ease. With support for both block and file storage, the 3000i allows organizations to streamline their data operations and optimize their storage strategies. This flexibility means that regardless of the specific requirements, users can manage their data efficiently and effectively.

The Dell 3000i supports multiple connectivity options, including iSCSI and Fibre Channel, ensuring that it can be integrated seamlessly into existing IT environments. This versatility allows organizations to leverage their current infrastructure while capitalizing on the advanced capabilities of the 3000i. Additionally, it features a modular architecture, enabling users to scale their storage incrementally as their needs grow. This means businesses can start with a small footprint and expand their storage capacity without any disruption.

Data protection is a critical concern for all organizations, and the Dell 3000i addresses this with advanced RAID configurations, which safeguard data against hardware failures. Furthermore, it includes features such as snapshots and remote replication, allowing businesses to implement robust disaster recovery solutions. These capabilities ensure that data remains safe and accessible, even in the event of unexpected incidents.

Another notable characteristic of the Dell 3000i is its management interface. The system is equipped with an intuitive and user-friendly management console that simplifies administrative tasks. This console provides real-time insights into performance metrics, storage utilization, and system health, enabling IT administrators to make informed decisions quickly.

In conclusion, the Dell 3000i stands out as a reliable and efficient storage solution for organizations seeking to enhance their operational capabilities. With its high performance, flexibility, and robust data protection features, it effectively supports the growing data demands of today’s digital landscape. Businesses looking for a storage system that can evolve with their needs will find the Dell 3000i to be a compelling choice, combining advanced technology with user-friendly management for optimal data handling.