User's Manual

ASUS PIKE 2208 2-17
◊ Always Write Back: In Writeback mode, the controller sends a data
transfer completion signal to the host when the controller cache has
received all of the data in a transaction. This setting is recommended
in Standard mode.
• IO Policy: The IO Policy applies to reads on a specic 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.
◊ Cached: In cached I/O mode, all reads are buffered in cache memory.
• Drive Cache: Specify the drive cache policy:
◊ Unchanged: 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
conguration can be initialized in the background while you use
WebBIOS to do other conguration tasks. This is the default.
◊ Yes: Select Yes if you do not want to allow background initializations
for congurations on this controller.
• Select Size: Specify the size of the virtual drive in terabytes, gigabytes,
megabytes, or kilobytes. Normally, this would be the full size for RAID 10
shown in the Conguration 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 denition, or click
Reclaim to to undo the changes.
17. Click Yes to conrm the write policy mode you have chosen.
18. When you nish dening virtual drives, click Next. The conguration preview
screen appears.
19. Check the information in the conguration preview screen.
20. If the virtual drive conguration is acceptable, click Accept to save the
conguration. 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 conguration.
21. If you accept the conguration, click Yes at the prompt to save the
conguration.
22. Click Yes at the prompt to start initialization.