150 Chapter 7 Configuring Storage on the Thunder 9530™ V Series Subsystem7.4.8 Changing the Format ModeThis mode enables the subsystem to set the priority of host access and the format for theformat in the background.To set the Format Priority Mode, follow these steps:1. On the Tools menu, select Configuration Settings or click Configuration Settings buttonon the toolbar.2. Click the Format Mode tab.3. Click the desired radio button from the Format Priority Mode.The following table lists and describes the operation of each mode.No. Mode Operation1 Normal (Default) Formats at an idle time when no host I/O is executed.2 Host Host I/O instruction is executed preferentially.3 Format Formats are done preferentially.Note1: Formatting using the Format Priority Mode allows the subsystem to minimize theeffects from host access and complete the format promptly, for the online format during thedisk drive addition or during the recovery work from the two points disk drive failure.Host access performance may be significantly affected because this mode restrictscommands from host.