Avago Technologies 3ware SAS 9750-4i - Manual (Page 108)

Chapter 2. CLI Syntax Reference
100 3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.0
autoverify attribute enables the autoverify attribute on the unit to be
migrated. For more details on this feature, see “/cx/ux set autoverify=on|off”
on page 90.
Migration Process
In all cases of migration, the background migration process must be
completed before the newly sized unit is available for use. You can continue
using the original unit during this time. Once the migration is finished, a
reboot will be required if you are booted from the unit. For secondary storage,
depending on your operating system, you may need to first unmount the unit,
then use CLI commands to ‘remove’ and ‘rescan’ the unit so that the
operating system can see the new capacity, and then remount the unit. For
details see “/cx/ux remove [noscan] [quiet]” on page 87 and “/cx rescan
[noscan]” on page 62.
You may also need to resize the file system or add a new partition. For
instructions, consult the documentation for your operating system.
Example of splitting a mirror
//localhost> /c1/u3 migrate type=single
Sending migration message to /c1/u3 ... Done.
In this case, the command indicates that u3 should be split into Single units. In
this case, u3 is a RAID 1 and the Migrate command splits u3 into u3 and ux,
each with a RAID type of Single.
Example of capacity expansion
//localhost> /c0/u3 migrate type=raid10 disk=10-11 stripe=16
Sending migration message to /c0/u3 ... Done.
In this case, the command indicates that the source unit is u3 and the
destination unit has a RAID type of raid10 and has added the disks 10 and 11
to the disks in the existing unit u3.
Warning: It is important that you allow migration to complete before adding drives
to the unit. Making physical changes to the unit during migration may cause the
migration process to stop, and can jeopardize the safety of your data.
Warning: Make sure that no I/O is pending and that the unit is unmounted before
splitting a mirror. If the RAID 1 is the boot device, you should boot from a different
device before splitting the mirror.