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QUICKSPECS
1 DA-10575-00A-001 — 09.11.2000
Compaq System Area Network
ServerNet II Switch
Usage
The ServerNet II Switch ("ServerNet Switch") is used to connect Compaq servers together in a ServerNet
System Area Network to achieve new levels of server capability and flexibility. The ServerNet Switch efficiently
and reliably routes packets for the purpose of distributing work among a collection of servers.
The ServerNet System Area Network is a point-to-point, packet-switched, wormhole-routed, robust fabric for
connecting servers. Compaq ServerNet II PCI Adapter and Drivers within each server provide highly efficient
messaging facilities to Operating Systems, Middleware and Applications for each server within a System Area
Network.
Configuration Flexibility
The ServerNet Switch requires 2U in a 19" Rack. Mounting brackets are included. The ServerNet Switch
supports up to twelve connections (see Connectors and Interface Cables). Specialized ServerNet Switch
configurations exceeding twelve connections can be created from multiple switches cascaded into symmetric or
asymmetric topologies.
Fault Tolerant
Fault tolerance is designed into individual switches, including features such as duplicate-state machines, path
disables, link keep-alive protocol, protocol checkers, link-level flow control, transaction timeout counters,
inclusion of both source and destination addresses within each packet.
A fault tolerant network is achieved by configuring redundant switch fabrics to each of the two ports of a
ServerNet II PCI Adapter.
Switching Bandwidth and Efficiency
Each of the twelve connections support point-to-point data links of 1.25 + 1.25 gigabits per second of bidirectional bandwidth giving an aggregate switch bandwidth of 15 gigabits per second. Effective bandwidth can
be increased between ServerNet Switches to 5.0 + 5.0 gigabits per second in specialized configurations by
merging sets of parallel links.
The ServerNet Switch path formation latency for up to twelve incoming packets switched (non-blocking) to
twelve outgoing routes is approximately 300 nanoseconds. Routing tables support arbitrary network topologies.
Manageability
ServerNet Switch control is contained within ServerNet links. No additional networking hardware is involved to
initialize and control ServerNet II. Switch-related host software drivers support installation and industry standard
management tools such as SNMP for enterprise systems management access.
Compatibility and Integration Testing
The ServerNet Switch has been tested on a variety of Compaq ProLiant and Alpha-based servers and
workstations.
System Area Network Architecture
Servers that have been tested with the ServerNet II Switch are the PL1600, PL1850R, PL3000, PL5500,
PL6400R, PL8000, PL8500, DL360, DL380, DL580, ML370, ML530, and the ML570.
Warranty
Same as the connected servers.
M
ODELS
ServerNet II Switch
12 ports, Copper Serial
174739-001 (US)
174739-B31 (Int’l)
ServerNet II Cables
ServerNet II 5-meter Copper
Serial Cable Kit
174737-B21
ServerNet II 10-meter Copper
Serial Cable Kit
174738-B22
ServerNet II is a high
performance, low latency
network used to interconnect
servers with other servers in a
System Area Network.
The ServerNet II Switch
is a 12 port, non-
blocking switch
used to connect from two to
twelve Compaq servers in a
cluster.
The ServerNet II Switch is
available in a 2U Rack
Mountable package.
Fault tolerant networks are
standard options at installation.
Specialized configurations of
multiple switches are available.
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QUICKSPECS
2 DA-10575-00A-001 — 09.11.2000
Compaq System Area Network
ServerNet II Switch
SPECIFICATIONS
Signaling and Interfaces
ServerNet Links 125 MHz, packet payload up to 512 bytes
Connectors Twelve 8 pin Berg MetaGig connectors
Interface Cables Cables are IEEE industry standard - Serial 1000Base-CX (up to 25
meters)
Safety and Regulatory Compliance FCC Class A
CISPR 22/EN 55022
C.R.C., c.1374 (Canadian Radio Interference)
CE Mark
New Zealand Radio Frequency Service, RFS49
EN 50082-1, IEC 801-2,3,4
Council Directive 89/336/EEC
IEC 950/EN 60 950
UL 1950
CSA 22.2-950; VDE 0805/IEC950
Physical
Power and Cooling
Power supply +110/220V AC (+ or-5%)
50 Hz / 60 Hz
Cooling 12V DC fan
Switch Chassis Physical
Dimensions (HxWxD)
3.46 x 16.85 x 23.25 in/8.8 x 42.8 x 59.0 cm
Power
Low Range - USA, Japan 100 to 120 VAC 50 Hz/60 Hz
High Range - Europe, US Industrial
200 to 240 VAC 50 Hz/60 Hz
Environmental Requirements
Operating temperature 41° to 131°/5° to 55°C – TDM Class A
Relative Humidity 10% to 85%
Maximum Thermal Drift (% /hr) 51.8°F/11°C – TDM Class A
Thermal Shock (Delta °) 68°F/20°C – TDM Class A
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