Channel, disk, and global memory directors
79
Symmetrix DMX-3 Hardware
ESCON channel
directors
The Symmetrix DMX-3 ESCON director has eight ESCON channel
interfaces for connection to host systems and eight high-speed paths
to global memory. The ESCON channel director interfaces to the host
channels through an eight-port ESCON channel interface adapter
and supports data transfer rates up to 17 MB/s per port.
The Symmetrix ESCON director can support up to 1,024 logical paths
per port when only the A port of the A and B ports of the processor is
configured and up to 512 logical paths per port when both the A and
B ports are configured.
Note: Contact your local EMC Sales Representative for ESCON channel
director availability.
The Symmetrix DMX-3 may support 2 to 10 ESCON channel
directors. Table 19 on page 79 describes the ESCON channel
configurations supported in the DMX-3.
SDMS support The Symmetrix ESCON director supports the SDMS (Symmetrix
Data Migration Service) application for migrating data over ESCON
channels from one Symmetrix system to ESCON channels on another
Symmetrix system.
Table 19 ESCON director configurations
A and B port enabled A port enabled
Maximum LCU (logical control units) per port 16 (00 to 0F) 16 (00 to 0F)
Maximum LCUs per Symmetrix system 250 250
Maximum devices per LCU 256 256
Maximum logical paths per port 512 1,024
Maximum logical paths per LCU per port 32 64
Maximum DMX channel addresses per one or two ports 2,048 + 2,048 2,048
Maximum DMX channel addresses per Symmetrix system consisting of up to
64,000 base devices (physical devices) with up to 255 aliases (logical devices)
64,000 64,000
Maximum concurrent I/O host connections per Symmetrix DMX system
a
80 40
a. The maximum concurrent I/O connections is based on 10 ESCON directors. Contact your local EMC Sales Representative for specific
supported configurations.
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