Dell VNX5800 VNX Series: Introduction to SMB 3.0 Support - Page 12

Multichannel, VHDX in Shared Mode

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3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 Data Mover 3 Data Mover 2 VHDX in Shared Mode Production VM Failover VM Figure 7 VHDX in Shared Mode Figure 7 shows an example of a clustered Hyper-V configuration with a VHDX file shared by two nodes. The use case for VHDX in Shared Mode is to employ Hyper-V guest failover clusters. In the event that a virtual machine's host fails, its shared data can be accessed by a surviving virtual machine. Multichannel SMB 3.0 introduces Multichannel where multiple TCP connections can be associated with a single SMB session. A restriction in the previous versions of SMB was that only one TCP connection could be established per SMB session. Now, if one TCP connection is broken, the user session can continue using the remaining, active TCP connections. The connection to the CIFS server on the Data Mover remains established until the last TCP connection is terminated. Multichannel provides several benefits, including: EMC VNX Series: Introduction to SMB 3.0 Support 12

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EMC VNX Series: Introduction to SMB 3.0 Support
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Data Mover 3
Data Mover 2
Production
VM
Failover VM
VHDX in
Shared Mode
Figure 7
VHDX in Shared Mode
Figure 7 shows an example of a clustered Hyper-V configuration with a VHDX file
shared by two nodes. The use case for VHDX in Shared Mode is to employ Hyper-V
guest failover clusters. In the event that a virtual machine’s host fails, its shared data
can be accessed by a surviving virtual machine.
Multichannel
SMB 3.0 introduces Multichannel where multiple TCP connections can be associated
with a single SMB session. A restriction in the previous versions of SMB was that only
one TCP connection could be established per SMB session. Now, if one TCP
connection is broken, the user session can continue using the remaining, active TCP
connections. The connection to the CIFS server on the Data Mover remains
established until the last TCP connection is terminated.
Multichannel provides several benefits, including: