Advantages of using ASM

Can someone tell me some reason for using
ASM when using hardware stripe & mirror
besides that files are created and managed automatically?

Hi,
In large-scale environments, ASM eases the task of managing thousands of database files by using DISK GROUPS instead. Disk Groups are disk devices managed as a logical unit. When creating a new tablespace, control file, or redo log file you can specify a disk group as the storage area for the database structure rather than an operating system file.
ASM uses OMF and mirroring and striping features to provide a file system and logical manager that supports multiple databases, nodes, and RAC. ASM eliminates the need to purchase a 3rd party logical volume manager... ASM strips files, not logical volumes.
In addition to spreading db objects over multiple devices, ASM allows new disk devices to be added to the database while the database is running, as well as automatically rebalancing the distribution of files w/ minimum intervention.
The DBA assumes the traditional role of "System-admin space manager" this brings hardware provisioning for db objects more closely into the world of the DBA.
Can someone tell me some reason for using
ASM when using hardware stripe & mirror
besides that files are created and managed
automatically?

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##### CHECKING ASM
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SunOS neonrcom-db1 5.10 Generic_127128-11 i86pc i386 i86pc
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Copyright (c) 1982, 2005, Oracle. All rights reserved.
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Copyright (c) 1982, 2005, Oracle. All rights reserved.
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specify a password for system as parameter 2
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specify a password for sysman as parameter 3
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Variable Size 2264925376 bytes
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3 MAXLOGHISTORY 1
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5 MAXLOGMEMBERS 3
6 MAXDATAFILES 100
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ORA-01031: insufficient privileges
Message was edited by:
tjobbins

Update: I've worked out the difference between the two sets of errors I get.
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ORA-00200: control file could not be created
ORA-00202: control file: '+DBLIVE1'
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However if my init.ora contains the line:
control_files=/opt/oracle/server/10.2.0/dbs/cntrlNEONREL1.dbf
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CREATE DATABASE "NEONREL1"
ERROR at line 1:
ORA-01501: CREATE DATABASE failed
ORA-00349: failure obtaining block size for '+DBLIVE1'
ORA-01031: insufficient privileges
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