Technical data

150 Chapter 7 Configuring Storage on the Thunder 9530™ V Series Subsystem
7.4.8 Changing the Format Mode
This mode enables the subsystem to set the priority of host access and the format for the
format in the background.
To set the Format Priority Mode, follow these steps:
1. On the Tools menu, select Configuration Settings or click Configuration Settings button
on 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 Operation
1 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 the
effects from host access and complete the format promptly, for the online format during the
disk drive addition or during the recovery work from the two points disk drive failure.
Host access performance may be significantly affected because this mode restricts
commands from host.