Installing An Emm; Ac Power Supply Unit Or Cooling Fan Module - Dell MD1420 Hardware Owner's Manual

Figure 12. Removing and installing an EMM
1. release lever
2. EMM
3. release tab

Installing an EMM

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and
simple repairs as authorized in your product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow
the safety instructions that came with the product.
1. Insert and seat the EMM into the EMM bay.
2. Push the release lever toward the chassis until it clicks into place.
3. Connect all the SAS cables to the EMM.
4. For information about the latest firmware, see the Dell Support website at dell.com/support
5. If applicable, update the firmware of the EMM.
NOTE: If two EMMs are installed in the enclosure, you must ensure that both the EMMs have the same firmware version
installed. You can verify if both the enclosures use the same firmware version by checking the LEDs on the enclosure or
by using Server Administrator.
For more information about EMM connections and cabling, see Dell Storage MD1400 and MD 1420 Enclosure Hardware Deployment
Guide.

AC power supply unit or cooling fan module

Your enclosure supports two hot-swappable power supply unit or cooling fan modules. While the enclosure can operate temporarily with
one module, both the modules must be present for cooling the enclosure.
CAUTION: A single power supply unit or cooling fan module can be removed from a turned on enclosure for a maximum
period of five minutes. Beyond that time, the enclosure may automatically shut down to prevent damage.
16 Installing enclosure components