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Add-on Card User's Guide
9. Select a RAID level for the logical drive and press Enter.
10. (Optional) Set the logical drive size by highlighting Size and Enter.
The minimum valid logical drive size is 64 Mbytes. An error will appear if you try
to create a logical drive that is smaller 64 Mbytes. By default, all the available
space in the array is to the current logical drive. For RAID 10 arrays, only one
logical can be defined for the entire array.
11. (Optional) Change the disks’s default Write Cache and Read policies (see Sec-
tion 3-3, “Setting the Hard Disk Write Cache Read Ahead Policies”).
12. When you have finished defining the current logical drive, Accept and press
Enter.
13. Configure additional logical drives on the same array, if desired. you have cre-
ated more than one array, configure a logical the second array.
14. Save the configuration when prompted, and press any key to the Management
Menu.
15. Initialize the new logical drive(s). (See Section 3-2 “Initializing Logical Drives,”
for detailed instructions.)
Creating a Global Hotspare Drive
The MegaRAID BIOS CU enables you to create global hotspare drives (dedicated
hotspare drives are not supported). A hotspare drive can automatically replace a
failed drive in a redundant RAID 1 or RAID 10 array, to protect against data loss.
Important:
When you select disk drive for a global hotspare, be sure it is the
same type of drive (either SAS or SATA) as the drives in the arrays that it will
protect. LSI recommends that you do not combine SAS and SATA drives in the
same array.
You can create a hotspare when you are configuring a new storage configuration, as
described in the previous sections. To add a hotspare drive to an existing redundant
storage configuration, follow these steps:
1. Select Objects from the Management Menu.
2. Select Physical Drive. A list of physical drives appears.
