Avago Technologies MegaRAID Fast Path Software - Manual (Page 102)

Page 102 LSI Corporation Confidential | July 2011
MegaRAID SAS Software User Guide Chapter 4: WebBIOS Configuration Utility | Creating a Storage Configuration
Figure 54: WebBIOS Virtual Drive Definition Dialog
13. Change the virtual drive options from the defaults listed on the dialog as needed.
Here are brief explanations of the virtual drive options:
— RAID Level: The drop-down menu list shows the possible RAID levels for the
virtual drive. Select RAID 50.
— Strip Size: The strip size is the portion of a stripe that resides on a single drive in
the drive group. The stripe consists of the data segments that the RAID
controller writes across multiple drives, not including parity drives. For example,
consider a stripe that contains 64 KB of drive space and has 16 KB of data
residing on each drive in the stripe. In this case, the stripe size is 64 KB and the
strip size is 16 KB. You can set the strip size to 8 KB, 16 KB, 32 KB, 64 KB, 128 KB,
256 KB, 512 KB, or 1024 KB. A larger strip size produces higher read
performance. If your computer regularly performs random read requests,
choose a smaller strip size. The default setting 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 option is the default setting.
Blocked: Do not allow access.