Separate diskgroup for Redolog file

Hi all,
DB version is 10.2.0.4
We have a data diskgroup of 15 disks each of 150gb size. Redologs are also present in the same diskgroup. Is that good to move the redologs to separate diskgroup.
Values below are in milli seconds
         INST_ID EVENT                                    WAIT_TIME_MILLI WAIT_COUNT
         1 log file parallel write                             4096         43
         2 log file parallel write                             4096         58
         1 log file parallel write                             8192         11
         2 log file parallel write                             8192          7
REDO WRITE STATS
"redo write time" in centiseconds (100 per second)
11.1: "redo write broadcast ack time" in centiseconds (100 per second)
11.2: "redo write broadcast ack time" in microseconds (1000 per millisecond)
VERSION              INST_ID NAME                                                     VALUE        MILLISECONDS
10.2.0.4.0                 1 redo write time                                        1077109        10771090.000
10.2.0.4.0                 1 redo writer latching time                                  316
10.2.0.4.0                 1 redo writes                                            2862035
10.2.0.4.0                 2 redo write time                                         981350         9813500.000
10.2.0.4.0                 2 redo writer latching time                                  260
10.2.0.4.0                 2 redo writes                                            2727285
This will be the threshold in milliseconds for average log file sync
times.  This will be used for the next queries to look for the worst
'log file sync' minutes.  Any minutes that have an average log file
sync time greater than the threshold will be analyzed further.
THRESHOLD_IN_MS
        823.135What are the other parameter i need to check??
baskar.l

Baskar,
In general, its always good to place redo and control file on a separate, fast media so that their writing would not interfere with the rest of the database's writing. But if you are using ASM (since you mentioned disk group) , ASM would be taking care of the things since its using the principle of SAME which doesn't calls it mandatory to have completely distinct devices. Even the partitions on the same device, if managed properly can give optimal performance. So I don't thinkthat you would have a need to do it unless you are experiencing some serious bottlenecks in the writing of redo.
Just my 2 cents.
Aman....

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