Frame And Drawers; The Z13S Frame; Z13S Frame: Rear And Front View - IBM z13s Technical Manual

2.1 Frame and drawers

The z Systems frames are enclosures that are built to Electronic Industries Alliance (EIA)
standards. The z13s central processor complex (CPC) has one 42U EIA frame, which is
shown in Figure 2-1. The frame has positions for one or two CPC drawers, and a combination
of up to two PCIe drawers and up to one I/O drawer.
Figure 2-1 z13s frame: Rear and front view

2.1.1 The z13s frame

The frame includes the following elements, which are shown in Figure 2-1 from top to bottom:
Two Support Element (SE) servers that are installed at the top of the A frame. In previous
z Systems, the SEs were notebooks installed on the swing tray. For z13s servers, the SEs
are 1U servers that are mounted at the top of the 42U EIA frame. The external LAN
interface connections are now directly connected to the SEs at the rear of the system.
Optional Internal Battery Features (IBFs) that provide the function of a local uninterrupted
power source.
The IBF further enhances the robustness of the power design, increasing power line
disturbance immunity. It provides battery power to preserve processor data in a loss of
power on both power feeds from the utility company. The IBF provides battery power to
preserve full system function despite the loss of power. It enables continuous operation
through intermittent losses, brownouts, and power source switching, or can provide time
for an orderly shutdown in a longer outage.
Table 10-2 on page 372 lists the IBF holdup times for various configurations.
36
IBM z13s Technical Guide
Rear view
Support Elements
Internal Batteries
Power Supplies
2 x SCH
side by side
nd
Slot for 2 CPC
Drawer
CPC Drawer
SEs Monitors and
Keyboards
PCIe I/O Drawers
I/O Drawer
Front view