Bladesthat use iSCSI boot must contain the Cisco UCS M51KR-B Broadcom BCM57711 network
adapter.For information on installing or replacing an adapter card, see the Cisco UCS B250
◦
ExtendedMemory Blade Server Installation and Service Note. The service note is accessible from
theCisco UCSB-Series Servers DocumentationRoadmap athttp://www.cisco.com/go/
unifiedcomputing/b-series-doc.
◦ Set the MAC addresses on the iSCSI device.
◦ If you are using the DHCP VendorID (Option 43), the MAC address of an iSCSI device needs to
beconfigured in /etc/dhcpd.conf.
◦ HBA mode (also known as TCP offload)and the boot to targetsetting are supported. However,
onlyWindows OS supports HBA mode during installation.
◦ Before installing the OS, disable the boot to targetsetting in the iSCSI adapter policy, then after
installingthe OS, reenable the boot to target setting.
Eachtime you change an adapter policy setting, the adapter reboots to apply the new
setting.
Note
◦Wheninstalling the OS on the iSCSI target, the iSCSI target must be ordered before the device
wherethe OS image resides. For example, if you are installing the OS on the iSCSI target from a
CD,the boot order should be the iSCSI targetand then the CD.
◦ After the server has been iSCSI booted, do not modify the Initiator Name, Targetname, LUN,
iSCSIdevice IP,or Netmask/gateway using the Broadcom tool.
◦ Do not interrupt the POST (power on self-test) process or the Cisco UCS M51KR-B Broadcom
BCM57711network adapter will fail to initialize.
• For Cisco UCS M81KR VirtualInterface Card and Cisco UCS M82-8P Virtual Interface Card:
• Do not set MAC addresses on the iSCSI device.
•HBAmode and the boot to targetsetting are not supported.
•Wheninstalling the OS on the iSCSI target, the iSCSI target must be ordered after the device where
theOS image resides. For example, if you are installing the OS on the iSCSI target from a CD,
theboot order should be the CD and then the iSCSI target.
• If you are using the DHCP VendorID (Option 43), the MAC address of the overlay vNIC needs
tobe configured in /etc/dhcpd.conf.
• After the server has been iSCSI booted, do not modify the IP details of the overlay vNIC.
• The VMware ESX/ESXi operating system does not support storing a core dump file to an iSCSI boot
targetLUN. Dump files must be written to a local disk.
Cisco UCS Manager GUI Configuration Guide, Release 2.0
OL-25712-04 445
iSCSI Boot