Administrator Guide

VMware vSphere and Live Volume
56 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
8.9.1 vMSC uniform storage presentation
Uniform presentation (Figure 48) tends to be a more common design, which provides host-to-Live-Volume
storage paths through both arrays. This means that half of the I/O will go through the primary Live Volume
and the other half with be proxied through the replication link through the secondary Live Volume. Uniform
presentation helps provide a better level of uptime for virtual machines if Live Volume automatic failover
occurs because of an unplanned storage or fabric outage. Automatic role swap may or may not disabled
when using the Round Robin PSP in conjunction with uniform storage presentation.
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Tiebreaker
site
vSphere Stretched Cluster
Site 1 Site 2
Synchronous High
Availability replication
Live Volume
VMFS datastores or RDM
TCP/IPTCP/IP
Primary Secondary
Fibre Channel
or iSCSI
Fibre Channel
or iSCSI
Fibre Channel
or iSCSI
SC Series
array
SC Series
array
High Availability
PrimarySecondary
Uniform
vMSC uniform storage presentation