NonStop NS2400 Series Planning Guide

A NonStop NS2400 series system supports up to four rx2800 i4 blade elements configured in
pairs. Because modular hardware provides flexibility in how hardware is distributed in a rack, up
to four blade elements can be installed in a single footprint.
To reduce ambiguity in identifying proper cable connections to the blade element, an identification
convention uses numbers to refer to each connection. A number such as 1, 2, 3, and 4 identifies
each blade element. These IDs reference the appropriate blade element for proper connection of
cables.
Versatile I/O (VIO) Enclosure (DC-Powered)
The 4U VIO enclosure uses -48 volt DC power and provides Gigabit Ethernet networking and
connectivity to the processors. Two VIO enclosures, one required for each ServerNet fabric, are
installed in a 19-inch rack.
For an illustration of the VIO enclosure slot locations, see Figure 39 (page 118).
Each VIO enclosure contains:
• Connectivity for up to four processors, configured in pairs.
• Connectivity for up to four Storage CLIM CGs configured in pairs and used to communicate
with storage devices such as Serial Attached SCSI (SAS) CG disk enclosures.
• Up to eight copper/optical Ethernet ports used for Ethernet connectivity. Additional Ethernet
connectivity is available via IP or Telco CLIM CG connections with up to two IP or Telco CLIM
CGs.
NOTE: For details about connecting to the embedded or optional expanded Ethernet ports
on the VIO enclosure, ask your authorized HP service provider to refer to the Versatile I/O
Manual.
• Two fans to provide the cooling for components inside a VIO enclosure.
• Two power supplies with universal AC input to provide power to the components in a VIO
enclosure
Storage CLuster I/O Module (CLIM CG or CLIM T)
The Storage CLuster I/O Module (Storage CLIM CG or Storage CLIM T) is a Carrier-Grade version
of the commercial Storage CLIM that is used in Telco or Carrier-Grade environments. The Storage
CLIM connects to the VIO enclosure and functions as a ServerNet adapter through which storage
devices connect to the system.
The Storage CLIM (CLIM CG or CLIM T):
• Can connect to these storage devices using a Serial Attached SCSI (SAS) interface for the
storage subsystem via a SAS Host Bus Adapter (HBA):
◦ “SAS Disk Enclosures” (page 109)
◦ “DAT 160 Tape Unit (Optional)” (page 113)
• Provides ServerNet fabric connections.
• Can coexist with other types of CLIMs in the same system.
• Is configured as part of a pair for fault-tolerance.
• Connects to the CG maintenance switch using an embedded Ethernet port.
• Has a ground connection between the CLIM chassis and the cabinet.
• Has a retainer for the cable management arm, which keeps the cable management arm from
moving during a seismic event.
108 NonStop NS2400T and NS2400ST Systems Overview