Bug#826976: Should partman-raid offer new partition types for RAID?
According to this document
(From the mdadm 2.6.8 man-page) When creating partition-based arrays
using mdadm and version-1.x superblocks, the partition type should be
set to 0xDA (non fs-data). This type selection allows for greater
precision since using any other type [RAID auto-detect (0xFD) or a
GNU/Linux partition (0x83)], might create problems in the event of
array recovery through a live cdrom.
More on the wiki page.
Should a new debian installer offer 0xDA partition type as a
recommended way to create RAID arrays?