Proliant DL380G3 performance

[BR811530]

We had a Proliant DL380G3 with Integrated SA5i+ (64MB) with 4 Nos. 36GB/10K/U320 HDD. We recently upgraded the server with SA6402/256MB Controller and have upgraded Lastest Version BIOS for DL380G3/SA6402/HDDs and have installed latest drivers for SA6402 for Windows 2000. The server has SQL 2000 Database and customer used a few queries to determine the I/O perfomance before and after the upgrade. The performance after installing SA6402/256 has not improved even marginally and in some cases it has deteriorated. Cache Setting on the SA6402 is 100% Read. I'm at a loss as to how to explain this to my customer.

[CA859951]

100% read cache is lilkely what is degrading you... if you are using the 6400 to host all of your "Data space" then you are trying to build the temporary and logs "where"? If they are on the same array then you are not going to see performance... best to run the card at 50/50 or make sure your logs are being hosted on another array off of the 6400 card...

[BR811530]

Thanks for the prompt reply... the point is we have not done any array changes at all .. it's the same array of 36X4 which was connected to Internal SA5i+ (only 48MB Usable Cache and the controller is Ultra160!!!).. why should the performance deteriorate after increasing the Cache as well as speed of controller....

[CA859951]

Reconfigure the cache on the 6400 to be 50% read and 50% write.