About DAE2 Disk Enclosures

The latch holds the disk module in place to ensure proper connection with the midplane. Disk drive Activity/Fault LEDs are integrated into the carrier.

Power Supply/System Cooling Modules

The power supply/system cooling (power/cooling) modules are located above the LCCs. The units integrate independent power supply and dual-blower cooling assemblies into a single module.

Each power supply is an auto-ranging, power-factor-corrected, multi-output, off-line converter with its own line cord and on/off switch. Each supply supports a fully configured DAE2 and shares load currents with the other supply. The drives and LCC have individual soft-start switches that protect the disk drives and LCCs if you install them while the disk enclosure is powered up. A FRU (disk, LCC, or power/cooling module) with power-related faults will not adversely affect the operation of any other FRU.

The enclosure cooling system includes two dual-blower modules. If one blower fails, the others will speed up to compensate. If two blowers in a system (both in one power/cooling module, or one in each module) fail, the DAE2 will go off line within two minutes.

Each power/cooling module has three visible status lights. The rightmost LED indicates power to the supply; the LED adjacent to it indicates a power supply fault. The leftmost LED indicates a failure in one of the integrated blowers within that module that cool the disk enclosure. The status lights are shown in Figure 1-8 and described in Monitoring Disk Enclosure Status in Chapter 3.

 

 

Power Switch

 

 

ac

 

 

 

Connector

 

Blower Fault

Latch Power Fault

Power

 

LED

LED (Amber)

LED

 

(Amber)

 

(Green)

EMC2163

Figure 1-8Power Supply/System Cooling Module

A latch on the power/cooling module locks it into place to ensure proper connection to the midplane. You can add or remove one

Power Supply/System Cooling Modules

1-9

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EMC ATA, FC manual Power Supply/System Cooling Modules, 8Power Supply/System Cooling Module

FC, ATA specifications

EMC ATA (Advanced Technology Attachment) and FC (Fibre Channel) are two significant technologies in storage networking that enhance data management and access in enterprise environments.

EMC ATA, often associated with ATA storage devices, offers a cost-effective solution for managing large volumes of data. Shipments of ATA drives have become increasingly popular in the realm of consumer electronics due to their affordability and capacity. EMC utilizes ATA drives in various storage solutions, primarily focusing on performance and reliability. These drives handle particular workloads effectively, making them suitable for environments that require mass data storage, such as digital media and backup solutions.

In terms of key features, EMC ATA solutions provide high capacity, reliability, and cost-effectiveness. They are designed to manage routine data storage tasks with ease. These storage devices utilize interfaces that provide straightforward integration with various computer systems. Additionally, EMC ATA solutions come with error detection features and are generally simple to deploy, which is beneficial for teams seeking efficiency without an extensive learning curve.

On the other hand, Fibre Channel (FC) is a high-speed network technology primarily used for interconnecting storage area networks (SANs). Its robust architecture allows for high-speed data transfer rates, typically ranging from 2 Gbps up to 128 Gbps in contemporary systems. The strengths of FC lie in its ability to provide low-latency communications and its reliability in handling large volumes of data traffic.

Fibre Channel's main characteristics include its ability to support multiple protocols, such as SCSI and IP. This compatibility makes it a flexible choice for various storage solutions, especially in large-scale enterprise environments. Additionally, FC switches and directors enable the creation of complex SAN architectures, which can be both scalable and high-performing.

Furthermore, FC ensures data integrity through features such as error correction and data recovery mechanisms, making it an ideal choice for mission-critical applications. Secure connectivity is also a fundamental aspect of Fibre Channel technology, as it continuously secures data as it flows through the network.

Combining the strengths of EMC ATA's cost-effectiveness in bulk storage and the high-performance capabilities of Fibre Channel, organizations can achieve a balanced storage solution tailored to their operational needs. As data storage demands continue to grow, these technologies remain relevant, supporting both traditional and cutting-edge applications in enterprise IT environments.