Administrator Guide

Live Volume with Linux/UNIX
84 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
An LVMR volume (in asynchronous mode with active snapshot/Replay enabled, or in synchronous mode) can
be used to manage and provide an offsite copy of business-critical data for disaster recovery or data
distribution use cases (where locating data closer to the audience could significantly reduce data access
latency). Figure 69 depicts this scenario.
Live Volume with managed replication
10.3 Live Volume automatic failover
Live Volume is supported on any Linux platform that is supported by SCOS. For the list of Linux platforms
supported by SCOS, refer to the Dell EMC Storage Compatibility Matrix.
As of SCOS 7.3, the Live Volume automatic failover feature has not been fully tested on the Linux platform
and therefore it is not a supported configuration.
10.4 Live Volume and Linux MPIO
As discussed in previous sections, Live Volumes can be configured in uniform or non-uniform configurations.
In a uniform configuration, Live Volumes are mapped on the Linux host from both primary and secondary SC
Series arrays. An MPIO solution is required on the Linux host to manage these paths and direct I/O to the
paths in a way defined by the software load-balancing and failover directives. Currently on the Linux platform,
Device Mapper Multipath (DM-Multipath) is the only supported MPIO solution for Live Volumes. In a non-
uniform configuration, Live Volumes are mapped on the Linux host from either the primary or secondary SC
Series array. If there are multiple storage paths to the same array for storage controller redundancy and high
availability, DM-Multipath is needed to provide load-balancing and failover capabilities between these storage
paths.