Infortrend RAID Controller Manual

12.2 Preparing Controllers
12.2.1 Requirements:
To set up the redundant function, you must perform some basic steps.
These steps will be discussed in the following section.
Cabling Requirements:
Communications Channels:
- Controller Communications (Cache Synchronizing) Paths:
Controller RCC cable
3101 & 3102 series IFT-9013 and IFT-9016 + SCSI CH0
SentinelRAID A SCSI cable (CH 0)
EonRAID 2000-4 Two SCSI cables (CH 6&7)
EonRAID 2000-6 Two RCC cables (IFT-9536)
Fibre cables: Communications over
two of the dedicated I/O channels or
using all drive loops to distribute
comm. traffic
- Using one or two I/O channels for controller communications
(as listed above) is necessary especially when write-back
caching is preferred. If controllers are running in write-back
mode, a battery module is recommended for each controller.
- Use the default channel (CH 0) for the SentinelRAIDs. For the
EonRAID users, if the communications over Fibre is preferred,
the RCC cables (IFT-9536) should be connected to provide the
connection between controller detect signals.
Out-of-band Configuration
- RS-232C cable (for Terminal Interface Operation) connection.
Configuring two independent controllers into the redundant
mode requires the IFT-9535.
- Ethernet connection: If management through Ethernet is
preferred, connect the Ethernet interface from both controllers
to ports on a hub. The IP address assigned to one controller
will be inherited by another should controller failover occur.
Host and Drive Connection
- All channels must be connected between controllers
Redundant Controller 12-11