Optimizing Logical Device Performance

To ensure optimal performance of the logical devices 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.) Adaptec Storage Manager supports the application-specific performance modes described in this table.

Performance Mode

Performance Criteria

Best Performance

Dynamic (default)

  • Automatically adjusts criteria based on controller usage, RAID level, and disk drive type

Online Transaction Process (OLTP)/Database—a system that facilitates and manages transaction-oriented applications, such as data entry and retrieval applications.

  • 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:

Adaptec Storage Manager uses the Dynamic performance mode by default. In this mode, the performance criteria is adjusted automatically based on the RAID level of your logical devices and the type of disk drives on the controller.

To select a performance mode:

  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.