Adaptec 5405 User Guide - Page 66

Chapter 6: Modifying Your Direct Attached Storage ● 66 Optimizing Logical Drive Performance To ensure optimal performance of the logical drives in your storage space, you can select a performance mode to improve I/O throughput based on the needs of your application. (This feature is not supported on all controllers.) The following application-specific performance modes are supported by Adaptec Storage Manager. Performance Mode Dynamic (default) Online Transaction Process (OLTP)/ Database-a system that facilitates and manages transaction-oriented applications, such as data entry and retrieval applications. Performance Criteria Best Performance ● Automatically adjusts - criteria based on controller usage, RAID level, and disk drive type ● 100% Random ● 60%--80% Read ● 20%--40% Write ● 8Kb Blocks SAS: ● R0 Sequential writes (all request sizes) ● R0 File server and Web server ● R5 Sequential writes (all request sizes) ● R5 Web server ● R6 Web server ● R10 Sequential writes ● R10 Web server SATA: ● R0 Sequential reads (all request sizes) ● R0 Sequential writes (all request sizes) ● R0 File/print server ● R5 Sequential writes (256Kb request size) ● R5 Random writes ● R6 Sequential writes (all request sizes) ● R10 Sequential writes (all request sizes) ● R10 Workstation: To select a performance mode for the logical drives on a controller: 1 In the Enterprise View, select the controller you want. 2 In the menu bar, select Actions, click Change performance mode, then select an application type. 3 Shutdown Adaptec Storage Manager and reboot the system. Note: You must reboot the system before the performance mode setting takes effect.