NonStop S-Series Planning and Configuration Guide (G06.29+)

ServerNet Cabling

HP NonStop S-Series Planning and Configuration Guide—523303-021

5-4

Serial-Copper Cables

You can connect a serial-copper cable to a serial-copper PICs installed in an MSEB or

IOMF 2 CRU. Serial-copper cables are lighter than ECL cables and do not require an

adapter cable. Therefore, serial-copper cables are preferred over ECL cables.

MMF and SMF Fiber-Optic Cables

You can use multimode fiber-optic (MMF) or single-mode fiber-optic (SMF) cables to

connect MSEBs to MSEBs or IOMF 2 CRUs that have the proper fiber-optic PICs

installed. Fiber-optic cables also connect an MSEB to a ServerNet switch board in an

IOAM enclosure or an MSEB to a cluster switch if a node-numbering agent (NNA) PIC

is installed in the MSEBs. Fiber-optic cables allow you to place enclosures farther apart

than you can with ECL or serial-copper cables.

MMF cables are recommended for use between MSEBs if you use fiber-optic cables.

SMF cables connect an MSEB to cluster switches. MMF cables are usually orange,

and SMF cables are usually yellow.

For a specification of the bend radius and performance requirements of fiber-optic

cables, refer to Fiber-Optic Cables on page B-6.

Caution. Do not force the cable connector when disconnecting a serial-copper connector.

Press the retainer fully, and the connector should release easily. Failure to unlatch the

connector can result in damage to the connector.

VST103.vsd

VST109.vsd