User manual ASUS PIKE 1068E

[. . . ] IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners' benefit, without intent to infringe. ii Contents Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Ahead: This enables read ahead capability, which allows the controller to read sequentially ahead of requested data and to store the additional data in cache memory, anticipating that the data will be needed soon. This speeds up reads for sequential data, but there is little improvement when accessing random data. Adaptive: When Adaptive read ahead is selected, the controller begins using read ahead if the two most recent disk accesses occurred in sequential sectors. If the read requests are random, the controller reverts to Normal (no read ahead). · Write Policy: Specify the write policy for this virtual drive: WBack: In Writeback mode the controller sends a data transfer completion signal to the host when the controller cache has received all the data in a transaction. This setting is recommended in Standard mode. WThru: 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. Wrthru for BAD BBU: Select WBack for Write Policy and unselect this item if you want the controller to use Writeback mode but the controller has no BBU or the BBU is bad. If you choose this option, the controller firmware automatically switches to Writethrough mode if it detects a bad or missing BBU. · IO Policy: The IO Policy applies to reads on a specific virtual disk. It does not affect the read ahead cache. 2-22 Chapter 2: RAID configuration 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. You use this screen to select physical drives to create disk groups (arrays). Hold <Ctrl> while selecting at least three ready physical drives in the Physical Drives window on the left. Click Accept DG to move the drives to a proposed disk group configuration in the Disk Groups window on the right. If you need to undo the changes, click the Back button. Hold <Ctrl> while selecting at least three more ready physical drives in the Physical Drives window to create a second disk group. Click Accept DG to move the drives to a proposed disk group configuration in the Disk Groups window on the right, as shown in the right figure. If you need to undo the changes, click the Back button. When you have finished selecting physical disks for the disk groups, click Next. You should add both disk groups you've created in the previous step to Span section. Select the disk group in Array With Free Space section and then click Add to Span. The Virtual Disk Definition screen appears, as shown in the right figure. 2-24 Chapter 2: RAID configuration You use this screen to select the RAID level, strip size, read policy, and other attributes for the new virtual disk(s). [. . . ] Select the SCSI Adapter you want from the following list, or press ESC to return to the previous screen. LSI MegaRAID SAS RAID Controller Driver (Windows 2003) LSI MegaRAID SAS RAID Controller Driver (Server 2003 32-bit) ENTER=Select F3=Exit 6. 7. The Windows® Setup loads the RAID card drivers from the RAID driver disk. When next screen appears, press <Enter> to continue installation. Setup then proceeds with the OS installation. [. . . ]