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Posted by Erland Sommarskog on 10/02/07 21:31
Neil (nospam@nospam.net) writes:
> We are running SQL 7 on a server, and are moving to a new server and
> will be upgrading to SQL 2005 at the same time. Currently, both the old
> and the new servers have two drives, one for programs and one for data.
>
> With the current configuration, SQL 7 and the data are both installed on
> the data drive, in the MSSQL7 directory. Our sys admin wants to install
> SQL 2005 on the program drive of the new server, while putting our
> databases on the data drive. I argue that if SQL itself is on the
> program drive, then the system databases will be in one place, while our
> databases will be in another. So I'd prefer to have SQL 2005 installed
> on the data drive, as it is now.
>
> I'm interested in any feedback regarding what you guys think is the better
> configuration, and also if there's any performance hit from having the
> program and the database on two drives of the same machine.
First make sure that the sysadmin makes the system drive big enough. SQL
2005 takes quite a toll on the system disk, not the least the system disk.
Make sure that there is at least 50 GB.
Next, it's difficult to not install most of SQL 2005 on the system disk, so
don't fiddle with that. It's not an issue anyway.
What is more important is how you place your data files. You have two
disks, and you have a data file, a log file, and then you have two files for
tempdb. Put the data and log file for the database on separate drives
for better odds in case of a crash. And put the log file for tempdb
where the data file for the database and vice versa. Or get more
disks to spread out over.
As for the memory, 2GB is not that impressing, but depending on how big
the active part of the database is, how well-tuned it is etc, it may
be sufficient.
--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se
Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx
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