Administrator Guide

Live Volume support for Microsoft Windows/Hyper-V
77 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
One of the best practices with CSVs is utilizing the ability to control which node is the CSV owner. Set the
CSV to be owned by a cluster node that is in the primary site and mapped directly to the SC Series array. In
this way, if the CSV goes into Network Redirected mode, the CSV owner is in the same site and downtime
can be eliminated or reduced.
Figure 67 depicts a multi-site Hyper-V cluster with Live Volume. In this figure, the SC Series storage at Site B
is offline. CSV network redirection can take over and proxy all the data traffic through the CSV owner on Host
A.
CSV resiliency with Live Volume and Network Redirection
If a failure happens that takes down SC Series B, Hyper-V can redirect access to the volume over the network
using CSV Network Redirected access.
9.10 Live Volume automatic failover for Microsoft
Live Volume automatic failover (LV-AFO) is a feature enhancement that first became available with SCOS 6.7
and was supported initially in VMware environments only. See section 8 for more information on VMware
support for LV-AFO.
With the release of SCOS 7.1 and Dell Storage Manager 2016 R2, support for LV-AFO was extended to
Microsoft Window Server cluster and Hyper-V cluster environments in addition to VMware. LV-AFO functions
essentially the same with Microsoft or VMware hosts, regarding triggers that cause a Live Volume to
automatically fail over given a DR situation (see section 8.12). The main difference is that VMware offers
some additional resiliencies with VM and workload recovery given a disaster.
To learn more about how LV-AFO works with Microsoft, including a deep dive into LV-AFO functionality and a
lab demo, see the three-part video series, Live Volume with Auto Failover Support for Microsoft.