Cisco UCS Virtual
Interface Card (VIC) drivers facilitate communication between supported
operating systems and Cisco UCS Virtual Interface Cards. Cisco UCS VIC driver
ISO bundles include an eNIC driver and an fNIC driver. The eNIC is the driver
for the Cisco UCS VIC Ethernet NIC. The fNIC is the driver for the Cisco UCS
VIC Fibre Channel over Ethernet HBA. fNIC is not supported in UCS Manager
For Windows, the ISO
bundle also includes the iSCSI Crash Dump driver, which supports Windows crash
dumps when the server is booted from the Cisco VIC Ethernet interface using the
Microsoft iSCSI initiator.
Cisco UCS Manager Release 3.1(2) and later releases do not support Cisco UCS
Cisco UCS Manager
Release 2.5 that introduced Cisco UCS M-Series Modular servers, continues to
provide vNIC capabilities. Additionally, it provides for a new capability with
its virtualized shared local storage. This virtual storage controller provides
access to a virtual drive that is provided to the server through the shared
storage controller and hard drives in the chassis. The virtual storage
controller introduces a new PCIe device known as a SCSI NIC (sNIC), which is
presented to the OS. The OS views these items as locally-attached SCSI devices.
sNIC provides the pathway for SCSI commands from the server to the virtual
drive. This controller is a new device to the OS and uses an sNIC driver that
is loaded into the OS. Because the sNIC is a new PCIe device, the sNIC driver
may not be part of some OS distributions. When that is the case, the sNIC
driver must be loaded at the time of OS installation to see the storage device
on the server. The sNIC driver, like the eNIC and fNIC drivers, is certified by
the OS vendor and eventually included as part of the core OS install package.
When the driver is present, the virtual drive is visible to the OS, and is
presented as a standard hard drive connected through a RAID controller.