Table 5.3 Physical Device Layout (Cont.)

Channel 0

Channel 1

Target ID

Device type

Logical drive number/Drive number

Manufacturer/Model number

Firmware level

5.2Configuring Arrays

You organize the physical disk drives in arrays after they are connected to the SCSI channels controlled by the LSI Logic SCSI chip on the motherboard, and after they are formatted. An array can consist of up to 15 physical disk drives, depending on the RAID level.

The MegaRAID SCSI 320-0 supports up to eight arrays. The number of drives in an array determines the RAID levels that can be supported.

5.2.1Arranging Arrays

You must arrange the arrays to provide additional organization for the drive array. You must arrange arrays so that you can create system drives that can function as boot devices.

You can sequentially arrange arrays with an identical number of drives so that the drives in the group are spanned. Spanned drives can be treated as one large drive. Data can be striped across multiple arrays as one logical drive.

You can create spanned drives by using the MegaRAID BIOS Setup utility or the MegaRAID Manager.

5.2.2Creating Hot Spares

Any drive that is present, formatted, and initialized, but is not included in a array or logical drive is automatically designated as a hot spare.

5-8

Configuring Physical Drives, Arrays, and Logical Drives

 

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