Raid 5 will degrade performance, not many mount points.
You will have contention, but that is not because of mount points or because
of the lack of them. It is due to the fact that everything is running on
the same set of disks.
Raid 5 takes a big hit on performance, but if that is your only option, you
need to see if write performance is suitable enough for what you are trying
to accomplish. Although Raid 5 is very slow on write performance, it may be
enough to accomplish what you are trying to do as it's read perfomance is
good.
"Do not criticize someone until you walked a mile in their shoes, that way
when you criticize them, you are a mile a way and have their shoes."
Christopher R. Spence
Oracle DBA
Phone: (978) 322-5744
Fax: (707) 885-2275
Fuelspot
73 Princeton Street
North, Chelmsford 01863
-----Original Message-----
Sent: Friday, August 17, 2001 10:31 AM
To: Multiple recipients of list ORACLE-L
Hi Guru,
We will be implementing Oracle in unix machine with Hardware Raid 5. We
can't implement Raid 1 as we do not have sufficient disk space.
Initially, we thought of having many mount points .ie. 1 mount point for
data files, another for index files, other mount points for redo log,
control file, archive log etc. The vendor consultant told us that having
many mount points may degrade the system performance. Is it true ? We've
decided to have different directories for data files, index files etc but I
am still worry about data contention.
Any advice ? Thanks.
Regds,
new bee
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