User guide

Compaq StorageWorks RAID Array 4000 User Guide
9. At the main screen, select Controller, Save Configuration from the
menu bar. This saves the new settings for Logical Drive 2 and starts the
capacity expansion process.
In case of power loss, capacity expansion process information is
temporarily stored in the Array Accelerator memory. To prevent the loss of data
in the expanding logical drive, do not interchange RA4000 controllers or Array
Accelerator boards during a capacity expansion process.
Logical Drive 2 will not be accessible until the capacity expansion process has
completed on Logical Drive 1.
Logical drive extension allows you to increase the size of existing logical
drives without disturbing the data on those logical drives. If an existing logical
drive is full of data, you can extend the logical drive when there is free space
on the array. If there is no free space on the array, add drives to the array and
extend the logical drive.
Logical drive extension is not supported by all operating systems. Only
extend logical drives that are used with an operating system that supports extension.
The following operating systems support logical drive extension:
■ Microsoft Windows NT 4.0
■ NetWare 5.0
■ OS/2 WarpConnect
■ OS/2 WarpServer
■ OS/2 WarpServer (Advanced)
■ OS/2 WarpServer SMP
■ OS/2 Warp 4.0
■ SCO OpenServer 5
■ SCO UnixWare 7
■ SCO UnixWare 2