Enclosure Configuration; Enclosure Core Product; 4U106 Enclosure Configuration - Seagate Exos E 4U106 Hardware Installation And Maintenance Manual

Enclosure Configuration

The 4U106 chassis is configured as an expansion enclosure, as shown in
qualified drive modules installed via the top panel.
• Hot-swappable (HS) expanders support 96 disc drives attached to four 24 HDD baseplanes (12 drives x 8
rows).
The 24 HDD baseplane continues to operate while the high-availability card is replaced when the enclosure:
Uses SAS drives

Does not use split-chassis shared-nothing firmware

Has a host connected to both IOMs

• The 10 HDD baseplane PCBA supports 10 drives (2 drives x 5 rows).
Table 2 4U106 enclosure configuration
Product Description of configuration
4U106 12Gb/s direct dock Large Form
Factor (LFF)
Enclosure location of FRU
variant
1-Redundant PSUs must be compatible modules of the same type (both AC).
2-For adequate cooling, four rear-panel system fans are required, and two IOM fans provide cooling for the IOMs (accessed via the top panel).
3-The IOM is used to connect the 4U106 to a host, or to connect to a host and additional storage enclosures.
4-LFF drives are supported using the 3.5" tool-less carrier; SFF drives are supported using the 2.5" tool-less carriers.
5-Hot-swappable expanders support 24 drive slots per drive row (8 rows total).

Enclosure core product

The design concept is based on an enclosure subsystem together with a set of plug-in Customer Replaceable Units
(FRUs). A typical enclosure System includes the following:
• An enclosure chassis equipped with several PCBAs, including a midplane, sideplane, and baseplane PCBAs,
and a cluster of enclosure status LED indicators located at the lower left area of the enclosure front panel
• Two PSU modules rated at 2,000W 200–240VAC
• Four rear fan modules for enclosure cooling
• One or two IOMs with four mini-SAS HD (SFF-8644) ports, a single serial port, and dual RJ-45 Ethernet
management ports (the Ethernet ports are not enabled). A single IOM must have IOM blank installed.
• Two fan controller modules for IOM cooling
• Up to 106 Disc Drive in Carriers (DDICs). 3.5" Large form factor (LFF) & 2.5" small form factor carrier are
available
• Eight removable hot-swappable expander cards, two per 24 HDD baseplane
• A rail kit for rack mounting.
• A cable management arm (CMA) for managing cables, and enabling in-rack servicing of the enclosure.
NOTE: About enclosure modules
• The drive modules are not installed when the enclosure ships. Do not insert drives into the enclosure until after
it has been secured in the rack. See also
• The following figures show component locations relative to the enclosure front, rear, and top panels.
• Refer to FRU Replacement Time Limit
PSUs 1 System fans 2 IOMs
2 4
Rear Rear
"Populating drive slots" (page
(Table 12) for maximum allowable time to replace FRUs.
Table 2. The enclosure supports 106
3 IOM Drives
2
fans
2 2 106
Rear Top Top
23).
4 HS
Expanders 5
8
Top
Enclosure Configuration 17