单项选择题

A.Cluster Shared Volumes (CSV)
B.a dynamically expanding VHD
C.SQL Server Resource Governor on the Hyper-V hosts
D.Failover Clustering on the VMs
E.a differencing VHD
F.Network Load Balancing (NLB) on the Hyper-V hosts
G.Windows System Resource Manager (WSRM)
H.network adapter teaming
I.Performance and Resource Optimization (PRO)
J.a pass-through disk
K.Multipath I/O
L.Network Load Balancing (NLB) on the VMs
M.round robin DNS