Asus PIKE 2008 IMR, Руководство пользователя

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ASUS PIKE 2008/IMR 2-17
11. Hold <Ctrl> while selecting a second drive group with two drives, and click
Add to SPAN .
Both drive groups display in the right frame under Span.
12. If there are additional drive groups with two drives each, you can add them to
the virtual drive.
13. When finish, click Next . The Virtual Drive Definition screen appears.
You use this screen to select the RAID level, strip size, read policy, and other
attributes for the new virtual drives.
14. Hold <Ctrl> while selecting two drive groups with two drives in the
Configuration panel on the right.
The WebBIOS Configuration Utility displays the maximum available capacity
while creating the RAID 10 drive group. In version 1.03 of the utility, the
maximum size of the RAID 10 drive group is the sum total of the two RAID 1
drive groups. In version 1.1, the maximum size is the size of the smaller drive
group multiplied by two.
15. Change the virtual drive options from the defaults listed on the screen as
needed.
Here are brief explanations of the virtual drive options:
• RAID Level: The drop-down menu lists the possible RAID levels for the
virtual drive. Select RAID 10.
• Strip Size: The strip size specifies the size of the segment written to
each disk in a RAID configuration. You can set the strip size up to 64 KB.
A larger strip size produces higher read performance. If your computer
regularly performs random read requests, choose a smaller strip size.
The default is 64 KB.
• Access Policy: Select the type of data access that is allowed for this
virtual drive:
◊ RW: Allow read/write access.
◊ Read Only: Allow read-only access. This is the default.
◊ Blocked: Do not allow access.
• Read Policy: Specify the read policy for this virtual drive:
◊ Normal: This disables the read ahead capability. This is the default.
• Write Policy: Specify the write policy for this virtual drive:
◊ Write Through: In Writethrough mode the controller sends a data
transfer completion signal to the host when the disk subsystem has
received all the data in a transaction. This is the default.