I am not going to tell you which way to do it. But, basically, I would think you would want to use TSM buffers before Veritas FS caching, so I would go with raw if it will work. It also gets into mirroring your log and database will be faster depending on your disk solution.
If you were using a high function disk subsystem with cache that has mirrored disk or Raid-5 disk in it and you are comfortable that these do not fail from a hardware error then you can avoid mirroring your data altogether. We use Shark. If you are using raw D1000 or A5000 disk, then you should spread the DB and Log across the disk. In no case should you put the log and DB in the same file system or on the same raw disk. I would recommend even avoiding them on the same physical disk in a high function disk subsystem if you can. -----Original Message----- From: Bruce Lowrie [mailto:[EMAIL PROTECTED]] Sent: Friday, March 15, 2002 1:10 PM To: [EMAIL PROTECTED] Subject: TSM Server 4.2.1.9 on Sun Solaris 8 Hello all, Running TSM 4.2.1.9 on a SUN E6000 with Solaris 8 in 64-bits mode. We run Veritas Volume Manager and File System as a Disk Mgr. We have two options for our TSM DB and LOG a) Use RAW partitions (Vertias VM partitions) b) Use File Systems (Veritas FS) FYI Our DB is about 20 GB in Size and Our LOG 1 GB I believe that the benefit of using RAW partitions is that it is faster ( NO FS overhead) The down side is that we are then unable to use the Unix Filesystem caching in RAM. I would like to know which is the best solution (speed and reliability). Bruce E. Lowrie Sr. Systems Analyst Information Technology Services Storage, Output, Legacy *E-Mail: [EMAIL PROTECTED] *Voice: (989) 496-6404 7 Fax: (989) 496-6437 *Post: 2200 W. Salzburg Rd. *Post: Mail: CO2111 *Post: Midland, MI 48686-0994 This e-mail transmission and any files that accompany it may contain sensitive information belonging to the sender. The information is intended only for the use of the individual or entity named. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or the taking of any action in reliance on the contents of this information is strictly prohibited. Dow Corning's practice statement for digitally signed messages may be found at http://www.dowcorning.com/dcps. If you have received this e-mail transmission in error, please immediately notify the Security Administrator at <mailto:[EMAIL PROTECTED]> ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs SkyScan service. For more information on a proactive anti-virus service working around the clock, around the globe, visit http://www.messagelabs.com ________________________________________________________________________
