Comments on: SQL SERVER 2005 Storage Performance

By: The Most-Watched IT Questions: January 25, 2011 - ITKE Community Blog

The Most-Watched IT Questions: January 25, 2011 - ITKE Community Blog — Tue, 25 Jan 2011 06:40:41 +0000

[...] 2. Keep track of the informative back and forth happening between RickMartinez and Mrdenny on SQL Server 2005 storage performance. [...]

By: rickmartinez

rickmartinez — Tue, 18 Jan 2011 19:46:47 +0000

Hello Mr. Denny, yes all LUN’s (VDisk) are on the same spindles. Our main database is 500GB and there are 10 more databases below 10GB.

By: mrdenny

mrdenny — Mon, 17 Jan 2011 23:46:42 +0000

Are those 6 LUNs on the same spindles, or on different spindles?

Having the disks not correctly aligned will impact performance. How large are the databases on your server?

By: Featured Member: Hlx - ITKE Community Blog

Featured Member: Hlx - ITKE Community Blog — Thu, 13 Jan 2011 06:28:48 +0000

[...] SQL Server 2005 storage performance [...]

By: hlx

hlx — Wed, 12 Jan 2011 19:14:53 +0000

I would verify how much of the Xiotech controller cache is being used for reads and consider adding more drives and separating the data and logs. In addition, it is likely that you can run profiler to identify your offending queries (highest reads) and will be able to reduce your total I/O by targeting either bad code or missing indexes.

By: rickmartinez

rickmartinez — Tue, 11 Jan 2011 21:11:31 +0000

Hello Mr. Denny thank you for your prompt response.
1. The disks are not aligned.
2. there are 32GB of RAM on the server 28GB for SQL using AWE and 4GB for OS
3. 6 SAN Drives dedicated to SQL Server RAID 10
(
A. Data
B. Backup
C.Indexes
D. Log
E. SystemDB
F. TempDB
)

4. 2 Local Drives dedicated to SQL Server
(
A.Misc Databases
B.Misc Databases
)