You can change the Aggregate Raid Type, here let's change aggr1 raid type from Raid-DP to other raid type. the Raid Group size will also changed accordingly. In this example we will change aggr2 from Raid-DP to Raid-4, you will see that the Raid Group size changed from 16 to 8.
1. First check the aggregate status:
fas01> aggr status aggr2 -d
Device HA SHELF BAY CHAN Disk Vital Product Information
---------- --------------- ----- ------------------------------
v4.32 v4 2 0 FC:B 75461613
v4.33 v4 2 1 FC:B 75461614
v4.34 v4 2 2 FC:B 75461615
v4.35 v4 2 3 FC:B 75461716
v4.36 v4 2 4 FC:B 75461717
v4.37 v4 2 5 FC:B 75461718
fas01> aggr status aggr2
Aggr State Status Options
aggr2 online raid_dp, aggr
Volumes: vol2
Plex /aggr2/plex0: online, normal, active
RAID group /aggr2/plex0/rg0: normal
fas01>
2. Next change the raid type using aggr options aggr2 raidtype raid4
fas01> aggr options aggr2 raidtype raid4
Sun Aug 30 20:47:37 GMT [raid.config.raidsize.change:notice]: Aggregate aggr2: raidsize is adjusted from 16 to 8 after changing raidtype
Aggregate aggr2: raidsize is adjusted from 16 to 8 after changing raidtype.
fas01>
fas01> aggr status
Aggr State Status Options
aggr2 online raid4, aggr
aggr1 online raid_dp, aggr
aggr0 online raid0, aggr root
fas01> df -Am
Aggregate total used avail capacity
aggr0 256MB 244MB 12MB 95%
aggr0/.snapshot 13MB 0MB 13MB 0%
aggr1 684MB 258MB 425MB 38%
aggr1/.snapshot 36MB 0MB 36MB 0%
aggr2 342MB 50MB 291MB 15%
aggr2/.snapshot 18MB 0MB 18MB 0%
fas01>