Administrator Guide

Live Volume with Linux/UNIX
93 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
d) The following relationships can be established after analyzing the information from steps a, b, and c.
Linux multipath device mpatha consists of eight storage paths that span across SC 22 and SC 23.
DM-Multipath
device
Linux host
storage paths
SC Series ports
mpatha
sdb →
SC22, Top Controller, Slot 1, Port 2
sde →
SC22, Top Controller, Slot 1, Port 4
sdh →
SC22, Top Controller, Slot 1, Port 1
sdi →
SC22, Top Controller, Slot 1, Port 3
sdc →
SC23, Top Controller, Slot 1, Port 1
sdf →
SC23, Top Controller, Slot 1, Port 3
sdd →
SC23, Top Controller, Slot 1, Port 2
sdg →
SC23, Top Controller, Slot 1, Port 4
10.7 Use cases
This section discusses various use cases of Live Volume and synchronous replication with Linux, and
highlights technical considerations that should be considered. These use cases are examples and starting
points for consideration. They are not a complete list of scenarios in which Live Volume and synchronous
replication can be adapted. The scenarios discussed can apply to both single- and multi-site deployments by
varying and either scaling the transport mechanisms (LAN, MAN, WAN) connecting site A to site B, or site A
to site C.
10.7.1 Single-site
In this single-site scenario, the Linux hosts and SC Series arrays are geographically located within the same
site boundaries though different buildings or labs if necessary. Figure 73 depicts this scenario.
Live Volume in a single-site use case