Chapter 2. CLI Syntax Reference
93
3ware SAS/SATA RAID Controller CLI Guide, Version 9.5.1
noscan
attribute instructs CLI not to notify the operating system of the
creation of the new unit. By default CLI will inform the operating system.
One application of this feature is to prevent the operating system from
creating block special devices such as /dev/sdb and /dev/sdc as some
implementations might create naming fragmentation and a moving target.
nocache
attribute instructs CLI to disable the write cache on the migrated
unit. Enabling write cache increases write performance but at the cost of
potential data loss in case of sudden power loss (unless a BBU or UPS is
installed). By default the cache is enabled. To avoid the possibility of data loss
in the event of a sudden power loss, it is recommended not to set nocache
unless there is a BBU (battery backup unit) or UPS (uninterruptible power
supply) installed.
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 85.
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,
Table 14: Supported Stripe Sizes
Model
R0
R1
R5
R6
R10
Spare
R50
Single
JBOD
7/8000
64
N/A
64
N/A
64
N/A
N/A
N/A
N/A
128
128
256
256
512
512
1024
1024
9000
a
a. Models 9500S, 9550SX, and 9590SE
16
N/A
16
N/A
16
N/A
16
N/A
N/A
64
64
N/A
64
64
256
256
N/A
256
256
9650SE
and
9690SA
16
N/A
16
16
N/A
16
N/A
N/A
64
64
64
64
64
256
256
256
256
