HP Compaq Integrated Smart Array Controller - Manual (Page 119)

Understanding Drive Arrays B-13
Compaq Confidential – Need to Know Required
Writer: CDresden Project: Compaq Integrated Smart Array Controller User Guide Comments:
Part Number: 153236-001 File Name: i-appb Understanding Drive Arrays.doc Last Saved On: 8/27/99 11:35 AM
Adding Storage Capacity
Storage capacity can be increased in two ways:
■ Capacity Expansion–Adding physical drives and creating new logical
drives.
■ Capacity Extension–Adding physical drives and growing the existing
logical drive (without adding new logical drives).
Array Configuration Utility will allow users to extend (increase) the size of
existing logical drives under any operating system. However, only
Windows NT 4.0 and OS/2 allow the user to resize a partition inside the
extended (bigger) logical drive using third party tools like
Power Quest’s Partition Magic (version 3.0 or later).
NOTE: Extending the capacity of an existing logical drive can be done off-line by backing
up all data, reconfiguring the array, and restoring the data. To extend capacity online,
your operating system must support a logical drive increasing in size.
The Integrated Smart Array Controller allows the configuration of one or more
separate logical drives into a single drive array. The controller also supports
extending the capacity of an existing logical drive. An existing drive array can
be expanded by adding one or more logical drives to the array or by growing
the capacity of an existing logical drive. To create the room for the additional
capacity, more physical drives must be added, as shown in the following
figure.
Original
Logical
Drive
Added
Physical
Drives
Figure B-9. Adding more physical drives