System Overview; Storage Enclosure Components; Storage Enclosure Chassis - Seagate Exos E 4U106 Installation And Maintenance Manual

2 System overview

The Exos 4U106 storage enclosure mounts to a rack cabinet, occupying four EIA rack space units (4U) and contains up to 106
hot-swappable drive modules.
CAUTION Make sure you are not connected to power at any time during installation procedures.
CAUTION Only operate the storage enclosure in a dust-free environment to meet temperature control and airflow
requirements.

Storage enclosure components

The typical 4U106 storage enclosure comes equipped with several core components.
The storage enclosure chassis exterior includes the front panel, top covers to access two internal bays, the rear panel, and
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the rear crossbar.
The storage enclosure chassis interior contains baseplane, sideplane, and midplane PCBs and the remaining components
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they control.
The main bay contains slots for 96 drive modules and an expander module for each of the eight (8) rows.
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The auxiliary bay contains slots for 10 more drive modules, two (2) controller fan modules, and two (2) SAS personality
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modules (PMs) interconnected with an inter-controller link (ICL) board.
The rear panel area contains four (4) system fan modules, two (2) power supply units (PSUs), and two (2) controller
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modules (CMs).
The rackmount rail kit consists of two (2) rails that connect the storage enclosure to the rack cabinet.
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The cable management arm (CMA) includes brackets on a flexible arm that routes and protects cables during in-rack
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maintenance procedures.

Storage enclosure chassis

The storage enclosure sheet metal is bonded together and free from non-conductive coatings. The top and rear panels
provide access to plug-in drive modules, integrated PCBs, and other FRUs.
NOTE You can order and attach optional lift handles to storage enclosure sidewalls to position it onto the lift. You must
remove the lift handles after positioning the storage enclosure and prior to its installation into the rack. Lift handles are not
part of the standard package, so you must order and install them separately.
Chapter 2 System overview
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