Dell MD1420 User Manual

3. Remove the hard disk drives. See Removing a hard disk drive.
4. Remove the EMMs. See Removing an EMM.
5. Remove the power supply or cooling fan modules. See Removing an AC power supply unit or
cooling fan module.
6. Remove the control panel. See Removing the control panel.
7. Remove the screws that secure the EMM or power supply cage to the chassis.
8. Hold the cage removal ring at the bottom center of the enclosure and pull the EMM or power supply
cage toward the back of the chassis.
Figure 22. Removing and installing the EMM or power supply cage
1. EMM or power supply cage 2. screws (6)
9. Lift the EMM or power supply cage away from the chassis.
10. Loosen the captive screw that secures the backplane to the chassis.
11. Remove the screws that secure the backplane and pull the backplane out of the enclosure.
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Dell MD1420 Specifications

General

Form Factor	2U Rack-Mountable
Interface	12Gbps SAS
Hot-Swap Bays	Yes
Drive Bays	24 x 2.5"
Maximum Capacity	Up to 192TB
RAID Support	Depends on controller
Power Supply	Redundant power supplies
Cooling	Redundant cooling fans
Product Type	Storage Enclosure
Number of Controllers	0 (JBOD)
Compatibility	Dell PowerEdge servers

Summary

About Your Enclosure

Front Panel and Bezel Features

Details indicators and buttons on the front panel and front bezel.

Hard Disk Drive and Back Panel Indicators

Explains hard disk drive status indicators and back-panel features.

Enclosure Management Module (EMM) Functions

Covers EMM features, failover, and thermal shutdown procedures.

Power Supply Indicators and Additional Resources

Explains power indicator codes and lists other useful documentation.

Installing Enclosure Components

Recommended Tools and Front Bezel Installation

Lists required tools and covers removing/installing the front bezel.

Hard Disk Drive and Carrier Installation

Details HDD installation, removal, and handling within drive carriers.

Enclosure Management Module (EMM) Installation

Covers installation/removal of EMM blanks and EMMs.

Power Supply Unit and Cooling Fan Module Procedures

Explains installation and removal of AC and DC power supply units and cooling fan modules.

DC Power Supply Unit Wiring and Safety

Details DC power supply features, wiring, safety ground connection.

Control Panel and Backplane Installation

Guides on removing/installing the control panel and backplane.

Troubleshooting Your Enclosure

General Safety and Startup Troubleshooting

Provides safety precautions and steps for troubleshooting enclosure startup failures.

Power Supply and Cooling System Troubleshooting

Addresses issues with power supply units, cooling problems, and firmware updates.

EMM and Hard Disk Drive Troubleshooting

Covers common problems with Enclosure Management Modules and hard disk drives.

Connection, Environment, and Damage Troubleshooting

Addresses issues with external connections, wet enclosures, and damaged components.

Getting Help and Documentation Feedback

Contacting Dell Support

Provides contact information for Dell technical support and service.