Asus PIKE 2008/IMR - Manual (Page 32)

2-18 Chapter 2: RAID configuration
• IO Policy: The IO Policy applies to reads on a specific virtual drive. It
does not affect the read ahead cache.
◊ Direct: In Direct I/O mode, reads are not buffered in cache memory.
Data is transferred to the cache and the host concurrently. If the same
data block is read again, it comes from cache memory. This is the
default.
• Drive Cache: Specify the drive cache policy:
◊ NoChange: Leave the current drive cache policy unchanged. This is
the default.
◊ Enable: Enable the drive cache.
◊ Disable: Disable the drive cache.
• Disable BGI: Specify the background initialization status:
◊ No: Leave background initialization enabled. This means that a
new configuration can be initialized in the background while you use
WebBIOS to do other configuration tasks. This is the default.
◊ Yes: Select Yes if you do not want to allow background initializations
for configurations on this controller.
• Select Size: Specify the size of the virtual drive in megabytes. Normally,
this would be the full size for RAID 10 shown in the Configuration Panel
on the right. You may specify a smaller size if you want to create other
virtual drives on the same drive group.
16. Click Accept to accept the changes to the virtual drive definition, or click
Reclaim to to undo the changes.
17. Click Yes to confirm to select the Write Through mode.
18. When you are finished defining virtual drives, click Next. The configuration
preview screen appears.
19. Check the information in the configuration preview.
20. If the virtual drive configuration is acceptable, click Accept to save the
configuration. Otherwise, click Cancel to end the operation and return to the
WebBIOS main menu, or click Back to return to the previous screens and
change the configuration.
21. If you accept the configuration, click Yes at the prompt to save the
configuration.
22. Click Yes at the prompt to start initialization.