Hi everybody
I've 4 DB (Oracle 7.3.4- HPUX- Filesystem based) that
reside in a Symmetrix box.
Sym disks are configurated as follows:
8 DISKS (36GB) RAID1, SO I SEE ONLY 4 DISKS 36GB
8 DISKS in RAID-S (2 RAID-S groups)
I've done this distribution:
1st RAID 1 ----->redo (db1)
RBS (db1)
system(db1)
temp(db1)
arch(db1)
2nd RAID 1 ----->redo (db2)
RBS (db2)
system(db2)
temp(db2)
arch(db2)
and so on..
And I've placed DATAFILES (Indexes and Tables) in the
RAID-S
IN THEORY, is the RAID1 distribution appropiate?
or it would be more convinient to MIX files from
different databases across the RAIDs1? (for instance,
to place all redo logs (db1,db2,db3,db4) in the 1st
RAID1, RBS_db1, RBS_db2, and temp_db3 in the 2nd
RAID1, etc)
Someone told me that if I mix datafiles I would get
better service times, because in my current
distribution the files in the symmetrix are accessed
at the same time "because thay belong to the same DB".
If I mix files from different DBs this will not happen
and thats why I'll get better services times.
IS THIS TRUE?
TIA
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