Advantech ASR-5300I Series, User Manual

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ASR-5300I Series Hardware User Manual 50
3.5.3 Single-Controller with Fault-Tolerant Path
Note! In the event of single-controller failure, a logical drive is accessed
through the host IDs managed by the alternate RAID controller. Host IDs
and port IPs do not failover to the surviving controller. Therefore, the
EonPath multipath driver is necessary for path redundancy and
controller failover.
Component Description
RAID system iSCSI RAID managed by a single controller, with 4 host ports
HBA or NIC
iSCSI initiators, preferably PCI-E TCP/IP offload engine (TOE)
capable cards
GbE cables GbE network cables
Software
EonPath to manage the fault-tolerant paths with failover/ failback
and load balance
RAID configuration
4 logical partitions (created from 2 logical volumes)
2 logical volumes (each contains a logical drive)
2 logical drives
* Each logical partition appears on two different host links for fault
tolerance. Use EonPath multipath software to ensure the operating
system can identify alternate paths to the same logical drive.