Asus PIKE 2008 IMR User Manual - Page 24
Accept DG, RAID Level, Strip Size, Access Policy, Read Only, Blocked, Read Policy, Normal
View all Asus PIKE 2008 IMR manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 24 highlights
3. When you have finished selecting drives for the drive group, click Accept DG. 4. Click Next. The Span Definition screen appears. Select one of the available drive groups, and then click Add to SPAN. 5. When finish, click Next. The Virtual Drive Definition screen appears, as shown in the right figure. You use this screen to select the RAID level, strip size, read policy, and other attributes for the new virtual drives. 6. 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 0. • 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. This is the default. ◊ Read Only: Allow read-only access. ◊ 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. • 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. 2-10 Chapter 2: RAID configuration