Table 6 Physical to logical port mapping example (continued)
Physical port Logical identifier
1 eth1b
2 eth1c
3 eth1d
Ethernet I/O modules
A system can have up to a maximum of four Ethernet I/O modules of any type. The
four Ethernet I/O module limit applies to any combination of the different types of
Ethernet I/O modules. In other words two 10GBaseT and two fiber optic Ethernet I/O
modules are allowed. But three of each is not allowed. The available Ethernet I/O
modules are listed in the Available I/O modules on page 26.
Fibre Channel (FC) I/O modules
An FC I/O module is a dual-port Fibre Channel module. Up to four FC I/O modules
may be installed. The optional virtual tape library (VTL) feature requires at least one
FC I/O module. Boost over Fibre Channel is an optional feature and requires at least
one FC I/O module. A maximum of four FC I/O modules may be installed in a system
using either VTL or the Boost protocol or a combination of both protocols.
SAS I/O modules
DD9500/DD9800 systems have three quad-port SAS I/O modules installed in slots 2,
3 and 6. DD9500/DD9800 systems configured with DD Extended Retention (ER) or
DD Cloud Tier software options require an additional SAS I/O module in slot 9.
I/O module slot assignments
The following figure shows the location of the NVRAM and I/O modules.
Figure 14
Location of NVRAM and I/O modules
1. NVRAM module—slot 0
Hardware Overview
Ethernet I/O modules 27
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