MSI X2-109 v1 - Manual (Page 41)

Configuring Arrays and Logical Drives 3-7
Version 2.0 Copyright © 2006 by LSI Logic Corporation. All rights reserved.
A list of the available RAID levels for the current logical drive
appears.
9. Select a RAID level for the logical drive and press Enter.
10. (Optional) Set the logical drive size by highlighting Size and pressing
Enter.
The minimum valid logical drive size is 64 Mbytes. An error message
will appear if you try to create a logical drive that is smaller than
64 Mbytes. By default, all the available space in the array is assigned
to the current logical drive. For RAID 10 arrays, only one logical drive
can be defined for the entire array.
11. (Optional) Change the disks’s default Write Cache and Read Ahead
policies (see Section 3.3, “Setting the Hard Disk Write Cache and
Read Ahead Policies” ).
12. When you have finished defining the current logical drive, select
Accept and press Enter.
13. Configure additional logical drives on the same array, if desired. If
you have created more than one array, configure a logical drive on
the second array.
14. Save the configuration when prompted, and press any key to return
to the Management Menu.
15. Initialize the new logical drive(s). (See Section 3.2.5, “Initializing
Logical Drives,” for detailed instructions.)
3.2.4 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, RAID 5, 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.