Component Description
This section provides the detailed illustration and description for each component.
System Subrack
The system subrack houses a midplane to provide reliable connections for interface modules and to distribute power and signals to inner modules.
Expansion Module
An expansion module provides expansion ports for communication between a disk enclosure and a controller enclosure, or between different disk enclosures. Each expansion module provides P0, P1, P2, and P3 expansion ports.
Ports
Figure 4-176 and Figure 4-177 show the ports of an expansion module.
Only serial cables can be inserted into the serial ports. Do not insert network cables into the serial ports.
- The management network port, maintenance network port, and serial port of a smart disk enclosure are reserved and do not need cable connection.
- The USB ports of a smart disk enclosure supply power to the status indicator on the front door of a disk bay only in the scenario where the 4 U controller enclosure is delivered as bay.
Indicators
Table 4-75 describes indicators on an expansion module of a powered-on storage system.
Indicator |
Status and Description |
|---|---|
Alarm indicator of the expansion module |
|
Power indicator of the expansion module |
|
Built-in FRU Alarm indicator |
|
100 Gbit/s RDMA port indicator |
|
Fan Module
A fan module dissipates heat and enables a controller enclosure to work properly at the maximum power consumption.
Appearance
Figure 4-178 shows the appearance of a fan module.
Indicators
Fans are embedded inside controllers and do not have independent indicators. You can check the running status of fans by observing controller indicators.
Power Module
The storage system supports AC and DC power modules. Power modules can ensure that the disk enclosure works correctly in maximum power consumption mode.
Appearance
Figure 4-179 shows the appearance of an AC power module. Figure 4-180 shows the appearance of a DC power module.
Indicators
Table 4-76 describes indicators on a power module of a powered-on storage system.
Indicator |
Status and Description |
|---|---|
Running/Alarm indicator of the power module |
|
Disk Module
Disk modules provide storage capacity for a storage system. Disk modules can function as system coffer disks to save service data, system data, and cache data.
Indicators
Table 4-77 describes indicators on a disk module of a powered-on storage system.
Indicator |
Status and Description |
|---|---|
Running indicator of the disk module |
|
Alarm/Location indicator of the disk module |
|