Integrated Dell Remote Access Controller 9 User's Guide

RAID Level Migration (RLM) refers to changing a virtual disk´s RAID level. iDRAC9 provides an option to increase the VD size using RLM. In a way, RLM allows migrating the RAID level of a virtual disk which in turn may increase the size of virtual disk.

RAID level migration is the process of converting a VD with one RAID Level to another. When you migrate a VD to a different Raid Level, the user data on it is redistributed to the format of the new configuration.

This configuration is supported by both staged and realtime.

The below table describes possible reconfigurable VD layouts while reconfiguring (RLM) a VD with addition of disks and without addition of disks.

Table 1. Possible VD LayoutThe below table describes possible reconfigurable VD layouts while reconfiguring (RLM) a VD with addition of disks and without addition of disks.

Source VD Layout	Possible target VD Layout with Disk Add	Possible target VD Layout Without disk addition
R0 (single disk)	R1	NA
R0	R5/R6	NA
R1	R0/R5/R6	R0
R5	R0/R6	R0
R6	R0/R5	R0/R5