Hitachi AMS 2100, Hardware Manual

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2–10
Functional and operational characteristics
Hitachi AMS 2100/2300 Storage System Hardware Guide
Fibre channel interface
The AMS 2100/2300 supports open system operations. The AMS 2100
supports up to 4 fibre-channel ports and the AMS 2300 supports to 8 Fibre
Channel ports. The AMS 2100/2300 Fibre Channel interface shortwave
multimode optical cables and operates at data transfer speeds up to
400 MB/sec. With these shortwave Fibre Channel cards, the AMS 2100/
2300 can be located up to 500 meters from an open-system host.
NOTE: For more information about the Fibre Channel interface, see
Chapter 3, Interfaces, in
the
Hitachi AMS2100/AMS2300 Series Disk Array
System Reference Guide.
NOTE: Set the “Transfer Rate” of Fibre Channel to the value
corresponding to the transfer rate of devices connected directly with an
array according to the following table. When the AMS 2100/2300 is
connected directly and externally with the Universal Storage Platform/
Network Storage Controller, set the port transfer rate of both the Universal
Storage Platform/ Network Storage Controller and the AMS 2100/AMS
2300 to the fixed transfer rate (the same value for the Universal Storage
Platform and the AMS 2100/2300 selecting any one of 1 Gbps, 2 Gbps, or
4 Gbps).
Table 2-7: Fibre Channel Transfer Rates
Transfer Rate of Devices Connected
with an Array (Gigabits per second)
Transfer Rate of an Array Subsystem
(Gigabits per second)
1 1
2 2
4 4
8 8
Auto (Maximum speed 8) 8
Auto (Maximum speed 4) 4
Auto (Maximum speed 2) 2
NOTE: When connecting an AMS 2100/2300 directly and externally with a
Universal Storage Platform/Network Storage controller, set the topologies
of both devices to “Loop”.