Figure 26. Fan cooling module (FCM)
1
Module release latch
2
Handle
3
Module OK LED (Green)
4
Fan Fault LED (Amber/blinking amber)
LED behavior:
•
If any of the FCM LEDs are illuminated amber, a module fault condition or failure has occurred..
•
For a detailed description of FCM LEDs, see
5U84 enclosure chassis
The 5U84 enclosure includes the following features.
NOTE:
Supported 5U chassis form factors used for configuring controllers and expansion enclosures:
•
5U84 chassis configured with up to 84 LFF disks in DDICs: see
Figure 20. 5U84 enclosure system - plan view of drawer accessed from
.
•
5U84 chassis configured with SFF disks in 2.5" to 3.5" hybrid driver carrier adapter.
•
5U84 empty chassis with midplane, module runner system, and drawers.
The chassis has a 19-inch rack mounting that enables it to be installed onto standard 19-inch racks and uses five EIA units of rack space
(8.75").
At the front of the enclosure, two drawers can be opened and closed. Each drawer provides access to 42 slots for Disk Drive in Carrier
(DDIC) modules. DDICs are top mounted into the drawers as shown in
Figure 20. 5U84 enclosure system - plan view of drawer accessed
. The front of the enclosure also provides enclosure status LEDs and drawer status/activity LEDs.
The rear of the enclosure provides access to rear panel CRUs: two Storage Bridge Bay (SBB)-compliant IOMs; two PSUs, and five fan
cooling modules.
5U84 enclosure drawers
Each enclosure drawer contains 42 slots, each of which can accept a single DDIC containing a 3.5" LFF disk drive or a 2.5" SFF disk drive
with an adapter.
Opening a drawer does not interrupt the functioning of the storage system, and DDICs can be hot-swapped while the enclosure is in
operation. However, drawers must not be left open for longer than two minutes, or airflow and cooling will be compromised.
NOTE:
During normal operation, drawers should be closed to ensure proper airflow and cooling within the enclosure.
A drawer is designed to support its own weight, plus the weight of installed DDICs, when fully opened.
Storage system hardware
21
