Administrator Guide

Live Volume with Linux/UNIX
88 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
Unselect Linux Live Volumes from the update list
In the event that Linux Live Volumes created before SCOS 7.3 are optimized, the Linux hosts might
experience temporary I/O interruption during the optimization process. The length of the interruption varies
depending on the host's DM-Multipath configuration. Internal testing showed this can range from a few
seconds to a couple minutes.
10.5.3 Disable reporting ALUA optimization
As discussed in section 10.5, it is not recommended to optimize Live Volumes for ALUA on the Linux
platform. Once a Live Volume is optimized for ALUA, it cannot be undone. However, the ALUA-optimized Live
Volume can be set to behave like a non-optimized Live Volume.
The Report Non-optimized Paths setting can be found under the Edit Live Volume Settings screen (Figure
72). By unchecking this option, SCOS stops reporting the non-optimized ALUA status of the storage path to
the Linux host. As a result, all paths on the Linux host appear as active and optimized, regardless of the
primary and secondary SC Series arrays. This is the same behavior on a system with SCOS prior to 7.3.
Disabling the Report Non-optimized Paths option does not interrupt host I/O, and therefore it is safe to
execute at any time.