Including Different-Sized Disk Drives In A Logical Drive - Adaptec Storage Manager User Manual

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Chapter 9: Managing Logical Drives and Hot Spares

Including Different-sized Disk Drives in a Logical Drive

You can combine disk drives of different sizes in the same logical drive.
If the logical drive includes redundancy, however, the size of each
segment can be no larger than the size of the smallest disk drive. (See
page 163 for more information about redundancy.)
To create a logical drive with disk drives of different sizes, follow the
instructions in Step 4: Building Your Storage Space on page 47. When the
logical drive is created, it appears similar to the example shown below,
where a RAID 5 logical drive includes two 16.95 GB disk drives and two
9.766 GB disk drives.
The Full Size Capacity View of the same RAID 5 logical drive shows that
the two larger disk drives still have available space (free segments,
indicated in light-blue) that is not part of a logical drive.
Light-blue segments are not part of a logical drive
You can include a disk drive's available space in a new logical drive (see
page 77), or add it to an existing logical drive (see page 84).