Learning about Custom Configuration
The Custom Configuration path allows you to manually configure your ServeRAID subsystem. Using this path, you can select the drives that you want to include in each array, define the number and size of the logical drives for each array, and select the drives that you want to use as hot spares.
Before you select the Custom Configuration path, consider the following:
When you create an array, you group hard disk drives into one storage area. You can define this storage area as a single logical drive, or you can subdivide it into several logical drives. Each logical drive appears to the operating system as a single physical hard disk drive.
If you have only one array, you can define it as a single logical drive, or you can divide it into several logical drives. Typically, the first logical drive defined on the first ServeRAID adapter or controller found by the basic input/output system (BIOS) during startup will be your startup (boot) drive.
Hard disk drive capacities influence the way you create arrays. Drives in an array can be of different capacities (1 GB 1, or 2 GB, for example), but RAID controllers treat them as if they all have the capacity of the smallest disk drive.
For example, if you group three 1 GB drives and one 2 GB drive into an array, the total capacity of the array is 1 GB times 4, or 4 GB, not the 5 GB physically available. Similarly, if you group three 2 GB drives and one 1 GB drive into an array, the total capacity of that array is 4 GB, not the 7 GB physically available.
1 When referring to hard-disk-drive capacity, GB means approximately 1000000000 bytes, total user-accessible capacity may vary depending on operating environment.
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