160 IBM System Storage N series Hardware GuideCreating RAID-DP aggregates and traditional volumesTo create an aggregate or traditional volume with RAID-DP–based RAID groups, select thatoption in FilerView when storage is provisioned. You can also add the –t raid_dp switch tothe traditional aggr or vol create command on the command-line interface (CLI). The CLIsyntax is [vol | aggr] create name –t raid_dp X, with X representing the number of disksthe traditional volume or aggregate contains. If the type of RAID group is not specified, DataONTAP automatically uses the default RAID group type. The default RAID group type that isused, either RAID-DP or RAID4, depends on the platform and disk that are used.The output that is shown in Figure 10-19 from the vol status command shows a four-diskRAID-DP RAID group for a traditional volume named test. The second parity disk for diagonalparity is denoted as dparity.Figure 10-19 Volume status command output of aggregateConverting existing aggregates and traditional volumes to RAID-DPExisting aggregates and traditional volumes can be easily converted to RAID-DP by using the[aggr | vol] options name raidtype raid_dp command. Figure 10-20 shows the exampleitso volume as a traditional RAID4 volume.Figure 10-20 The vol status command showing itso volume as traditional RAID4 volume
