Which options would reduce the load on the VMkernel when connecting to an iSCSI array? (Choose two.)
A. Use an independent hardware iSCSI adapter
B. Use a Converged Network Adapter
C. Enable the software iSCSI adapter
D. Use a dependent hardware iSCSI adapter
Correct Answer: AD
Explanation/Reference:
Hardware iSCSI Adapters
A hardware iSCSI adapter is a third-party adapter that offloads iSCSI and network processing from your host. Hardware iSCSI adapters are divided into categories.
Dependent Hardware iSCSI Adapter
Depends on VMware networking, and iSCSI configuration and management interfaces provided by VMware.
This type of adapter can be a card that presents a standard network adapter and iSCSI offload functionality for the same port. The iSCSI offload functionality depends on the host’s network configuration to obtain the IP, MAC, and other parameters used for iSCSI sessions. An example of a dependent adapter is the iSCSI licensed Broadcom 5709 NIC.
Independent Hardware iSCSI Adapter
Implements its own networking and iSCSI configuration and management interfaces.
An example of an independent hardware iSCSI adapter is a card that either presents only iSCSI offload functionality or iSCSI offload functionality and standard NIC functionality. The iSCSI offload functionality has independent configuration management that assigns the IP, MAC, and other parameters used for the iSCSI sessions. An example of a independent adapter is the QLogic QLA4052 adapter.
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc_50%2FGUID-7A4E3767-CB54-4E88-9BA8-298876119465.html
Converged Network Adapter is another name for hardware FCoE (fibre channel over ethernet).
This category includes completely offloaded specialized Converged Network Adapters (CNAs) that contain network and Fibre Channel functionalities on the same card.
When such adapter is installed, your host detects and can use both CNA components. In the vSphere Client, the networking component appears as a standard network adapter (vmnic) and the Fibre Channel component as a FCoE adapter (vmhba). You do not need to configure the hardware FCoE adapter to be able to use it.
http://pubs.vmware.com/vsphere-50/index.jsp#com.vmware.vsphere.storage.doc_50/GUID-A9503ED6-2622-4278-890E-B869C3971A9F.html?resultof=%2522%2555%2573%2565%2522%2520%2522%2575%2573%2522%2520%2522%2543%256f%256e%2576%2565%2572%2567%2565%2564%2522%2520%2522%2563%256f%256e%2576%2565%2572%2567%2522%2520%2522%254e%2565%2574%2577%256f%2572%256b%2522%2520%2522%256e%2565%2574%2577%256f%2572%256b%2522%2520%2522%2541%2564%2561%2570%2574%2565%2572%2522%2520%2522%2561%2564%2561%2570%2574%2522%25202522%2541%2564%2561%2570%2574%2565%2572%2522%2520%2522%2561%2564%2561%2570%2574%2522%2520
Explanation/Reference:
Hardware iSCSI Adapters
A hardware iSCSI adapter is a third-party adapter that offloads iSCSI and network processing from your host. Hardware iSCSI adapters are divided into categories.
Dependent Hardware iSCSI Adapter
Depends on VMware networking, and iSCSI configuration and management interfaces provided by VMware.
This type of adapter can be a card that presents a standard network adapter and iSCSI offload functionality for the same port. The iSCSI offload functionality depends on the host’s network configuration to obtain the IP, MAC, and other parameters used for iSCSI sessions. An example of a dependent adapter is the iSCSI licensed Broadcom 5709 NIC.
Independent Hardware iSCSI Adapter
Implements its own networking and iSCSI configuration and management interfaces.
An example of an independent hardware iSCSI adapter is a card that either presents only iSCSI offload functionality or iSCSI offload functionality and standard NIC functionality. The iSCSI offload functionality has independent configuration management that assigns the IP, MAC, and other parameters used for the iSCSI sessions. An example of a independent adapter is the QLogic QLA4052 adapter.
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc_50%2FGUID-7A4E3767-CB54-4E88-9BA8-298876119465.html
Converged Network Adapter is another name for hardware FCoE (fibre channel over ethernet).
This category includes completely offloaded specialized Converged Network Adapters (CNAs) that contain network and Fibre Channel functionalities on the same card.
When such adapter is installed, your host detects and can use both CNA components. In the vSphere Client, the networking component appears as a standard network adapter (vmnic) and the Fibre Channel component as a FCoE adapter (vmhba). You do not need to configure the hardware FCoE adapter to be able to use it.
http://pubs.vmware.com/vsphere-50/index.jsp#com.vmware.vsphere.storage.doc_50/GUID-A9503ED6-2622-4278-890E-B869C3971A9F.html?resultof=%2522%2555%2573%2565%2522%2520%2522%2575%2573%2522%2520%2522%2543%256f%256e%2576%2565%2572%2567%2565%2564%2522%2520%2522%2563%256f%256e%2576%2565%2572%2567%2522%2520%2522%254e%2565%2574%2577%256f%2572%256b%2522%2520%2522%256e%2565%2574%2577%256f%2572%256b%2522%2520%2522%2541%2564%2561%2570%2574%2565%2572%2522%2520%2522%2561%2564%2561%2570%2574%2522%25202522%2541%2564%2561%2570%2574%2565%2572%2522%2520%2522%2561%2564%2561%2570%2574%2522%2520
