Compaq ServerNet ServerNet II Specifications

M
O D E L S
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.
Q S
UICK
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Usage
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The ServerNet II Switch ("ServerNet Switch") is used to connect Compaq servers together in a ServerNet
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. . System Area Network to achieve new levels of server capability and flexibility. The ServerNet Switch efficiently
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and reliably routes packets for the purpose of distributing work among a collection of servers.
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The ServerNet System Area Network is a point-to-point, packet-switched, wormhole-routed, robust fabric for
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connecting servers. Compaq ServerNet II PCI Adapter and Drivers within each server provide highly efficient
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. . messaging facilities to Operating Systems, Middleware and Applications for each server within a System Area
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Network.
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Configuration Flexibility
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The ServerNet Switch requires 2U in a 19" Rack. Mounting brackets are included. The ServerNet Switch
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supports up to twelve connections (see Connectors and Interface Cables). Specialized ServerNet Switch
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configurations exceeding twelve connections can be created from multiple switches cascaded into symmetric or
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asymmetric topologies.
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. . Fault Tolerant
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Fault tolerance is designed into individual switches, including features such as duplicate-state machines, path
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disables, link keep-alive protocol, protocol checkers, link-level flow control, transaction timeout counters,
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. . inclusion of both source and destination addresses within each packet.
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A fault tolerant network is achieved by configuring redundant switch fabrics to each of the two ports of a
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ServerNet II PCI Adapter.
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Switching Bandwidth and Efficiency
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Each of the twelve connections support point-to-point data links of 1.25 + 1.25 gigabits per second of bi-
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directional bandwidth giving an aggregate switch bandwidth of 15 gigabits per second. Effective bandwidth can
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be increased between ServerNet Switches to 5.0 + 5.0 gigabits per second in specialized configurations by
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merging sets of parallel links.
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The ServerNet Switch path formation latency for up to twelve incoming packets switched (non-blocking) to
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twelve outgoing routes is approximately 300 nanoseconds. Routing tables support arbitrary network topologies.
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. . Manageability
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ServerNet Switch control is contained within ServerNet links. No additional networking hardware is involved to
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initialize and control ServerNet II. Switch-related host software drivers support installation and industry standard
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. . management tools such as SNMP for enterprise systems management access.
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Compatibility and Integration Testing
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The ServerNet Switch has been tested on a variety of Compaq ProLiant and Alpha-based servers and
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workstations.
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System Area Network Architecture
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Servers that have been tested with the ServerNet II Switch are the PL1600, PL1850R, PL3000, PL5500,
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. . PL6400R, PL8000, PL8500, DL360, DL380, DL580, ML370, ML530, and the ML570.
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Warranty
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Same as the connected servers.
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1 DA-10575-00A-001 — 09.11.2000
PECS
Compaq System Area Network
ServerNet II Switch