Gpfs how to remove nsd from a device

Gpfs how to remove nsd from a device
Need to removed nsd from the device below

 /apps/abinitio/outbound01 90 30 DEVappsabob01
root@carlvpc0lpr24 # df -g /apps/abinitio/outbound01
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/DEVappsabob01 90.00 89.39 1% 4032 1% /apps/abinitio/outbound01


root@carlvpc0lpr24 # mmlsnsd -f DEVappsabob01
File system Disk name NSD servers
---------------------------------------------------------------------------
DEVappsabob01 Nsd30_121 (directly attached)
DEVappsabob01 Nsd30_122 (directly attached)
DEVappsabob01 Nsd30_123 (directly attached)

Question, how do I remove and not touch or hurt the data
Do I have to migrate like migratepv
Or is gpfs smart enough
To move data off the device to free area when I remove nsd

./mmdeldisk DEVappsabob01 �whatever disks you want to remove� -r

you basically migrate to new disks when you remove the old ones.
Regards
zxmaus