Adaptec 3200S User Guide - Page 78

Storage Manager Device Configuration Window Click Configure in either Device Information or Array Group Information window to display the Device Configuration window, shown in Figure 3-19. Figure 3-19. Device Configuration Window - ATA and SCSI The Device Configuration window enables you to change the caching parameters for your controller and provides the following: Predictive Cache Write-back Enables and disables the predictive caching feature on RAID controllers. This feature is disabled by default. Predictive caching reduces average disk access time by determining when the host is requesting data that it read previously and reading in additional sequential data before it is actually requested, thereby enhancing performance if your data management application is single-threaded or generates only a small number of concurrent outstanding I/O requests. If your application does not fit this description, there may be no benefit from predictive caching and using it may adversely affect overall performance. Defers writes to disk until after command completion and generally provides better performance. 3-33