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Power cooling module
Figure 22
shows the power cooling module (PCM) used in controller enclosures and optional expansion
enclosures. The example shows a PCM oriented for use in the left PCM slot of the enclosure rear panel.
Figure 22 Power cooling module (PCM) detail
2U enclosure chassis
The 2U chassis consists of a sheet metal enclosure with an integrated midplane PCB and module runner system.
NOTE: Supported 2U chassis form factors used for configuring RBODs and EBODs:
•
2U12 chassis configured with 12 LFF disks: see
•
2U24 chassis configured with 24 SFF disks: see
•
2U12 empty chassis with midplane: see
•
2U24 empty chassis with midplane: see
•
The chassis has a 19-inch rack mounting that enables it to be installed onto standard 19-inch racks and uses two
EIA units of rack space (3.5") for a 2U enclosure.
•
The midplane PCB can support either 12 or 24 disk drive connections.
•
There are either 12 or 24 drive slots at the front of the enclosure, in horizontal (12) or vertical (24) orientation,
as defined by the enclosure variant. See also
drive carrier module that can hold these drive types, dependent upon the enclosure type:
2U12 enclosure: 12 low profile (1" high) 3.5" LFF disk drives, held horizontally.
2U24 enclosure: 24 low profile (5/8" high) 2.5" LFF disk drives, held vertically.
•
At the rear, the chassis assembly can hold a maximum of two PCMs and two SBB-compliant IOMs.
IMPORTANT: The DS Series and DS EXP/D3284 storage enclosures support SBB dual-controller configuration only.
If a partner controller fails, the storage system will fail over and run on a single controller module until the
redundancy is restored. An IOM must be installed in each IOM slot to ensure sufficient air flow through the enclosure
during operation.
30
System overview
Figure 5 (page 22)
Figure 7 (page 23)
Figure 23 (page 31)
Figure 24 (page 31)
Figure 10
and
Figure 11 (page
26). Each drive slot holds a plug-in
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Troubleshooting
