RAID manager or veritas volume manager

Can somebody kindly help me to determine which one i should choose to better manipulate OS volume.

RAID manager or veritas volume manager?

Any critical differences between those two?

Thanks in advance.

`raidctl` is for hardware RAID.
Solaris Volume Manager and Veritas Volume Manager are software-based RAIDs and both work fine. If you are using an array that will require Veritas file system then you should go with Veritas RAID for the OS. Personally I prefer SVM but only because I have a better understanding it versus Veritas.

Like Seg said raid manager is for hardware raid. I would use ZFS, which is built in with Solaris or Veritas Volume Manager an add on. Veritas was the preferred method but now with ZFS being ready for mission critical applications the tide is turining.

If you are going to configure diskgroups for SAN disks, then VxVM will be a better option

Yeah, thank you all for the advice...
I'm going for Veritas Volume Manager... version 3.5 though....

I suspect you already know this but just in case, be aware that 3.5 isnt supported by Symantec anymore, version 5.x is current.