Multiple channel directors
125
Performance and Optimization
ESCON channels Symmetrix ESCON channels transfer data at speeds up to 17 MB/s.
The data transfer rate depends upon the host system. Symmetrix
systems support ESCON fiber cable connections to 26.7 miles (43 km)
using repeaters in combination with multimode and single-mode
connections Figure 18 on page 96 and Table 22 on page 97.
Note: Table 60 on page 307 provides part numbers for ESCON channel
cables.
FICON channels Symmetrix FICON channels transfer data at speeds up to 4 Gb/s. The
DMX-3 FICON design auto-detects 4 Gb/s, or 2 Gb/s, 1 Gb/s at
switch or channel port login time.
Symmetrix systems support FICON fiber cable connections up to
7.45 miles (12 km) with single-mode connections.
Note: Table 21 on page 93 provides more detailed supported cable distance
information. Table 61 on page 308 provides part numbers for FICON channel
cables. For information on FICON multimode configuration support, contact
your local EMC Sales Representative.
iSCSI channels Symmetrix iSCSI channels transfer data at speeds up to 1 Gb/s.
Symmetrix systems support iSCSI cable connections up to 524.93 ft
(160 m) with multimode connections.
GigE remote channels Symmetrix GigE remote channels for SRDF transfer data at speeds up
to 1 Gb/s. Symmetrix systems support GigE remote cable
connections up to 524.93 ft (160 m) with multimode connections.
Note: Contact your local EMC Sales Representative for GigE remote support
availability.
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