NonStop NS16000 Series Planning Guide (H06.11+)

in the p-switches and IOAM enclosure, and optional UPS and the system console running HP
NonStop Open System Management (OSM). The maintenance switch includes enough ports to
support multiple systems. The maintenance switch mounts in the modular cabinet, but no restrictions
exist for its placement.
This illustration shows an example of two maintenance switches installed in the top of a cabinet:
Each system requires multiple connections to the maintenance switch. For more information, refer
to the connections described in “Basic LAN Configuration” (page 137) and “Fault-Tolerant
Configuration” (page 138).
The preferred configuration is connections to two maintenance switches.
UPS and ERM (Optional)
An uninterruptible power supply (UPS) is optional but recommended where a site UPS is not
available. You can use any UPS that meets the modular cabinet power requirements for all enclosures
being powered by the UPS. One UPS option is the HP R5000 UPS. For information about the
requirements for installing a UPS other than the HP R5000 UPS in an Integrity NonStop NS16000
series system, see “Uninterruptible Power Supply (UPS)” (page 33).
Cabinet configurations that include an R5000 UPS or R5500 XR UPS also have one extended
runtime module (ERM). An ERM is a battery module that extends the overall battery-supported
system run time. A second ERM can be added for even longer battery-supported system run time.
• Use the R5000 ERM(s) with the R5000 UPS.
• Use the R5500 XR ERM(s) with the R5500 XR UPS.
Adding an R5000 UPS to a modular cabinet in the field requires removing the PDU on the right
side of the modular cabinet and installing HP extension bars that are compatible with the UPS. A
factory-installed UPS ships with the HP extension bars already installed on the right side of the
modular cabinet. The PDU and extension bars are oriented inward, facing the components within
the modular cabinet. Both the UPS and the ERM are 3U high and must reside in the bottom of the
cabinet.
NOTE: Retrofitting a system in the field with a UPS and ERMs will likely require moving all installed
enclosures in the modular cabinet to provide space for the new hardware. One or more of the
enclosures that formerly resided in the modular cabinet might be displaced and therefore have to
be installed in another modular cabinet that would also need a UPS and ERMs installed.
Additionally, lifting equipment might be required to lift heavy enclosures to their new location.
NOTE: The AC input power cord for the R5000 UPS is routed to exit the modular cabinet at
either the top or bottom rear corners of the cabinet, depending on what is ordered for the site
power feed, and the large output receptacle is unused.
UPS and ERM (Optional) 131