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IMPORTANT!
Even though the iSCSI initiator software is a cost-effective way of building an
iSCSI SAN, this software initiator adds additional workload to the server CPU. We recommend
that you apply iSCSI HBAs that come with TCP/IP offload engines in order to reduce overhead.
Network and Host Connection Topologies
The iSCSI host ports must be connected to Ethernet network devices and iSCSI initiators that
comply with IEFT iSCSI standard (RFC 3720). The network connection of the iSCSI ports is
flexible. The use of network connecting devices, subnet, name servers, or iSCSI management
software varies from case to case.
Note that the host NIC ports and the storage system’s iSCSI host ports must be configured in
the same subnet, and the following:
•
Use the Ethernet Management port for management purposes only such as PAC
Management Software or telnet console. This port must not be used for I/O processes.
•
Configurations such as subnet or virtual LAN can separate iSCSI host links,
decrease overhead, and eliminate the impact of link failure.
•
Multiple arrays or logical partitions can be created and made available separately
via different IDs or LUNs on host ports. Usually, a RAID 5 logical drive of 8
members sometimes brings optimal array performance.
IMPORTANT!
If you are using Microsoft’s software initiator, uncheck the embedded MPIO
function when installing the software as the MPIO selection creates a conflict with MPIO driver.
