Specifications

94 MDR User Guide
D Supported PMCs Documentation
This appendix describes the PMCs that are supported by the MDR system.
Fibre Channel Storage
The permanent storage medium used by MDR is based on commercial hard disks using
the FC-AL (Fibre Channel Arbitrated Loop) interface. Fibre Channel is a serial link,
using either optical cables or differential ECL twinax cables, operating at 1.062 Gbit/sec.
The peak effective transfer rate of a Fibre Channel loop is approximately 100 MiB/sec.
MDR gets its disk recording performance from using an array of Fibre Channel disks
such as RAID (Redundant Arrays of Independent Disks) or JBOD (Just a Bunch Of
Disks) units.
VMFC-2100 Fibre Channel PMC
The VMFC-2100 is a Fibre Channel PMC module specifically designed to maximize
throughput while minimizing transfer latency and host processor overhead in embedded
real-time applications. In addition to mainstream Fibre Channel applications such as disk
storage, this interface is particularly well suited to applications where low latency
communications and high-sustained throughput are essential. This includes areas such as
multi-processor communications (telecommunications & radar signal processor), sensor
I/O (radar, sonar & image processing), and ultra-high performance computer networks
(digital broadcasting & subsystems data links). For further information on the VMFC-
2100 PMC module, see the VMFC-2100 Fibre Channel PMC Module User’s Guide.
Current Models
VMFC-2100-DC Fibre Channel PMC module with dual copper HSSDC interface
and integrated hub.
VMFC-2100P-DC Fibre Channel PCI card with dual copper HSSDC interface and
integrated hub.
VMFC-2100-CF Fibre Channel PMC module with single copper and single fibre-
optic interface and integrated hub.
VMFC-2100P-CF Fibre Channel PCI card with single copper and single fibre-optic
interface and integrated hub.
VMFC-2100-DF Fibre Channel PMC module with dual fibre-optic interface and
integrated hub.
VMFC-2100P-DF Fibre Channel PCI card with dual fibre-optic interface and
integrated hub.
Single Arbitrated Loop (RAID/JBOD connection)
The single arbitrated loop connection from the VMFC-2100 to the RAID/JBOD, is the
simplest point-to-point communications link possible with the VMFC-2X00.
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