Advantech DNS-3200 - Manual (Page 97)

79 Chapter 7
7.1.1 Operating System Split
When the administrator completes setup of the DNS-3200, including user
accounts, permissions, and programs, the operating system is saved using
mirror split as the backup method.
1.
Use the advanced option to split RAID1N into 2 RAID1 arrays. At
this time, Array 3 (as shown below) appears in the split array list.
Shown as Hidden,
The system is not accessible