RE: Disk configuration

[Kevin Lange]

It all depends on what kind of os/filesystem/and disks you have.   I know that under AIX, using SSA drives we could actually tell where on the disk we wanted the filesystem to go.  This way we could position certain things in the faster location.    But personally, I would not go thru the trouble.   I have never had a DB slowdown so far because of placement on the drive.   Admittadly, I have had probelms based on putting conflicting tables/indexes on the same drive .... you want to keep things that could be access simultaneously on  different media.  But other than that ....  no other conflicts. -----Original Message----- From: KC [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 19, 2001 9:36 AM To: Multiple recipients of list ORACLE-L Subject: Disk configuration Dear List,   Someone told me when a disk receive a write request, it write to the nearest free space on disk where the disk read/write head is currently positioning, is this information correct?? If this is true, is this a bad thing for database application?? That mean we can't really control where the file go, for performance purpose we may want to put certain files on the outer tracks of a disk, if the write location is depending on where the read/write head is, how can we avoid that, can we create subdisks from the outer track of a disk and create a logical volume from it??   KC