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A shelf of the X1981 provides a space for placing and connecting X1981 internal components. It also protects the components from contamination and external damage.
Appearance
The X1981 adopts the standard 2U (88.9 mm) shelf. The dimensions (H x W x D) of the shelf are 86.1 mm x 442 mm x 310 mm. The self can be installed in a 19-inch cabinet that meets the International Electrotechnical Commission (IEC) standard. Figure 1 shows the X1981 front panel.
Figure 1 Front panel
Slots
Slots are located on the front panel of the shelf. The X1981 provides two main control board slot, six interface board slots, two power supply sockets, and one fan tray assembly slot, as shown in Figure 2.
ϒ⁄Slots 0 to 2 and 4 to 6 are service board slots, which are used to install the MTU, ASI, OSU boards.
ϒ⁄Slot 3 and 7 are the main control board slot, which is used to install the SCU board.(Support Dual Controllers)
Figure 2 Slot distribution
ϒ⁄When only one SCU board is installed, the system runs in single-node control mode. When two SCU boards are installed, the system runs in active/standby control mode and has a higher reliability.
ϒ⁄The number of X1981 interface boards is determined by the system capacity. Filler panels must be inserted into blank slots.
ϒ⁄To ensure that basic services are functioning properly, at least one SCU board must be configured for the X1981.
Parent Topic: X1911/X1960/X1981 Product Architecture