Users Guide

10–iSCSI Protocol
iSCSI Crash Dump
130 BC0054508-00 M
Problem: In Windows Server 2012, toggling between iSCSI Host Bus Adapter
offload mode and iSCSI software initiator boot can leave the machine in a state
where the Host Bus Adapter offload miniport bxois will not load.
Solution: Manually edit
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\bxois\
StartOverride] from 3 to 0. Modify the registry key before toggling back from
NDIS to Host Bus Adapter path in CCM.
Problem: Installing Windows onto an iSCSI target through iSCSI boot fails when
connecting to a 1Gbps switch port.
Solution: This failure is a limitation relating to adapters that use SFP+ as the
physical connection. SFP+ defaults to 10Gbps operation and does not support
autonegotiation.
iSCSI Crash Dump
If you use the Marvell iSCSI Crash Dump utility, you must install the iSCSI Crash
Dump driver. For more information, see “Using the Installer” on page 95.
iSCSI Offload in Windows Server
iSCSI traffic may be segregated offload is a technology that offloads iSCSI
protocol processing overhead from host processors to the iSCSI Host Bus
Adapter to increase network performance and throughput while helping to
optimize server processor utilization.
This section covers Marvell’s iSCSI offload feature for the BCM57xx and
BCM57xxx family of network adapters on Windows Server systems. For Linux
iSCSI offload, see “Linux iSCSI Offload” on page 58.
Configuring iSCSI Offload
With the proper iSCSI offload licensing, you can configure your iSCSI-capable
BCM57xx and BCM57xxx network adapter to offload iSCSI processing from the
host processor. The following process enables your system to take advantage of
Marvell’s iSCSI offload feature.
 Installing Marvell Drivers and Management Applications
 Installing the Microsoft iSCSI Initiator
NOTE
Microsoft recommends against this method. Toggling the boot path from
NDIS to Host Bus Adapter, or Host Bus Adapter to NDIS, after installation is
completed is not recommended.