Overview
The controller enclosure adopts a modular design and consists of a system subrack, controllers (housing fan modules), power modules, BBUs, and disk modules.
Both AC and DC power modules are supported. One controller enclosure supports dual controllers.
Overall Structure
Figure 4-48 shows the overall structure and components of a 2 U 25-disk controller enclosure and Figure 4-49 shows the overall structure and components of a 2 U 12-disk controller enclosure.
The controllers are A and B from top to bottom. Controllers communicate with each other using internal heartbeat and mirroring links and do not need cable connections.
Front View
Figure 4-50 shows the front view of a 2 U 25-disk controller enclosure and Figure 4-51 shows the front view of a 2 U 12-disk controller enclosure.
- The disk slots of a 2 U 25-disk controller enclosure are numbered 0 to 24 from left to right. The four coffer disks are located in slot 0 to slot 3.
- The disk slots of a 2 U 12-disk controller enclosure are numbered 0 to 11 from left to right and from top to bottom. The four coffer disks are located in slot 0 to slot 3.
- SAS, NL-SAS, and SSD disks can be used as coffer disks. The type of the four coffer disks must be the same.
- Slots are used to accommodate and secure disks, interface modules, controller modules, fan modules, and power modules.
- The information plate records device information.
Rear View
Figure 4-52 shows the rear view of a controller enclosure.
- Only serial cables can be inserted into the serial ports. Do not insert network cables into the serial ports.
- Do not connect the management network port and maintenance network port to the same LAN or switch to prevent network loops.
- Controllers are numbered A and B from top to bottom. Each controller has three interface module slots. From left to right and from top to bottom, the slot IDs of the interface modules on controller A are numbered IOM 0, IOM 1, and IOM 2.
- For the types of interface modules supported by controller enclosures, see Interface Module. It is recommended that front-end interface modules be installed in the following slot sequence: IOM 0 > IOM 1 > IOM 2; back-end expansion modules be installed in the following slot sequence: IOM 2 > IOM 1 > IOM 0. The Scale-out interface module must be installed in slot IOM 1. The 12 Gbit/s SAS expansion module can only be installed in slot IOM 2.
- Onboard ports include GE ports, 10GE/25GE optical ports (do not support 25 Gbit/s optical modules, and 25GE is reserved), and mini SAS HD expansion ports. The storage system does not support optical modules purchased by the customer elsewhere. Use optical modules that match the storage interface modules.
- The maintenance network port is used for special management and maintenance only by Huawei technical support engineers in emergency. The initial IP address of the maintenance network port is 172.31.128.101 or 172.31.128.102. The default subnet mask is 255.255.0.0. You are advised to only connect the management network port to the network.
Hardware Specifications
Table 4-15 lists the dimensions and weight of the controller enclosure. For more specifications, refer to Specifications query (https://support-it.huawei.com/spec/#/home).
Item |
Specifications |
|---|---|
Dimensions (H x W x D) |
|
Weight (excluding disks and auxiliary materials such as guide rails and cables) |
|