Major difference is benifit of agile naming view of device files. Both legacy and persistent can be used simultaneously to access mass storage devices. It meant auto multipathing using persistent dsf was new in 11iv3. Multipathing concept was always there from begining, but were done manually using vgextend and all.
dvd clon
ioscan -m dsf
persistant and legacy names
nwmgr
swconfig
check_patches
LVM v.2 volume group
lvmadm -t
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