HP Surestore Disk Array 12h - And FC60, Advanced User'S Manual, Page: 103 / 466

Topologies for HP-UX
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Basic Topology
The basic topology covers a number of physical implementations of host systems and disk
arrays. In general, the following hardware components are used:
•
One or two host systems
•
One Fibre Channel I/O adapter for each implementation of the basic topology in each
server, with
•
Up to nine adapters in each
K
-Class server;
The maximum number depends on the number of HSC slots available in each
K
-Class
server (refer to the Configuration Guide for additional details)
•
Up to three adapters installed in any slots including the Turbo EISA slot in each D-Class
model D350, D360, D370 and D380 server;
Up to two adapters installed in any slots in all other models of D-Class server;
•
Up to 22 adapters in each T-Class T600 server
•
See your Hewlett-Packard support representative for the number of adapters supported
in each model of V-Class server
•
One or two dual-controller module disk arrays (for high availability) or
One to four single-controller module disk arrays (for non-high availability)
•
Maximum 500 m fibre optic cable distance between each host-to-disk array connection
•
Each implementation of the basic topology uses one Fibre Channel I/O adapter. Each
adapter connects to one controller module over an independent two-node Fibre
Channel-AL. For example, if one disk array with two controller modules connects to one
host with two Fibre Channel adapters, two separate two-node Fibre Channel-ALs are
created. Up to 22 instances of the basic topology can be implemented on T-Class servers
because up to 22 adapters can be installed in each T-Class system.
Supported cable lengths for each host-to-disk array connection include 2 m, 16 m, 50 m,
100 m, and 500 m. Fibre optic cables in lengths of 2 m, 16 m, 50 m, and 100 m can be
ordered from Hewlett-Packard (see the chapter 8 for part numbers). Fibre optic cables
longer than 100 m must be custom-fabricated for each implementation.
Non-high availability and high availability versions of this topology can be implemented
depending on whether one or two controller modules are installed in each disk array.