You might want to lookup MySQL and RAID. MySQL does support a database 
RAID setup. This confused me early on because I kept thinking of disk 
based RAID, but this is database based RAID. I  haven't used it yet, so 
I can't help you any more that that. Hope it helps a little.


On Thursday, August 15, 2002, at 08:38 PM, [EMAIL PROTECTED] wrote:

> A problem I have with InnoDB tables, which forced me to use MyISAM 
> tables in
> a recent project, is as follows:
>
> (I am running MySQL on Solaris, not that it matters much for this 
> problem.)
>
> With MyISAM tables, I can easily get different databases to reside on
> separate physical drives.
>
> The base directory for database files is /var/mysql/
> Then I mounted a drive at  /var/mysql/db_a
> and another at /var/mysql/db_b
>
> for instance. Then databases by the names "db_a" and "db_b" reside on
> different physical drives.
>
> But with InnoDB, you specify a tablespace file(s) and then the database 
> you
> create go into
> those files. I cant figure out any reasonable way to tie specific 
> databases
> to specific drives,
> except by running a mysqld server for each drive I want a database on.
> For large databases, proper planning of disk geometry can have a 
> significant
> effect
> on performance. I very much like InnoDB, but can't seem to get around 
> this
> problem.
>
> Any insight would be greatly appreciated.
>
> sean peters
> [EMAIL PROTECTED]
>
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--
Brent Baisley
Systems Architect
Landover Associates, Inc.
Search & Advisory Services for Advanced Technology Environments
p: 212.759.6400/800.759.0577


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