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5-8 Configuring Physical Drives, Arrays, and Logical Drives
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
5.2 Configuring 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.
5.2.1 Arranging 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.
5.2.2 Creating 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.
Target ID
Device type
Logical drive number/Drive number
Manufacturer/Model number
Firmware level
Table 5.3 Physical Device Layout (Cont.)
Channel 0 Channel 1