Chapter 6: Modifying Your Direct Attached Storage ● 61Including Different-sized Disk Drives in a Logical DriveYou can combine disk drives of different sizes in the same logical drive. If the logical driveincludes redundancy, however, the size of each segment can be no larger than the size of thesmallest disk drive. (See Selecting the Best RAID Level on page 152 for more information aboutredundancy.)Note: Adaptec recommends that you not combine SAS and SATA disk drives within the samelogical drive. Adaptec Storage Manager generates a warning if you try to create a logical drive usinga combination of SAS and SATA disk drives.To create a logical drive with disk drives of different sizes, follow the instructions in BuildingYour Storage Space on page 25.When the logical drive is created, it appears similar to the example in the next figure, where aRAID 5 logical drive includes two disk drives of one size and two of another—the disk driveicons indicate that the two larger disk drives still have available space.The Full Size Capacity View of the same RAID 5 logical drive shows that the larger disk drivesstill have available space (free segments, indicated in light-blue) that is not part of a logicaldrive. It also shows that the disk drive designated as a hot spare is large enough to replace anyof the disk segments included in the logical drive.You can include a disk drive’s available space in a new logical drive (see page 62), or add it toan existing logical drive (see page 69).Disk drive icons showspace still availableLight-blue segments are not part of a logical driveand are still available for use.
