Exporting JBOD Disks
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Exporting JBOD Disks
By default, JBOD disks (unconfigured disks) connected to the 3ware RAID
controller are not exported to the operating system. This means that any drives
you leave unconfigured are not seen by the operating system, and cannot be
used for storage. When Export JBOD Disks is set to No, you make individual
disks available for use by configuring them as Single Disks.
If you want unconfigured disks to be available on your computer, you can
change this setting in 3BM or using the CLI.
If JBOD disks are not exported to the operating system, they will appear as
available drives in 3DM, and can be configured as single disks or spares, and
included in other RAID configurations. If you change the policy to allow
JBOD disks to be exported to the operating system, they will appear as units
in 3DM if those drives were previously used as JBODs on another controller.
AMCC recommends that new drives be configured as Singles and not JBODs.
To enable or disable the export of unconfigured disks
1
At the main 3BM screen,
Tab
to
Policy
and press
Enter
.
2
On the
Policy
Control
screen,
Tab
to
Export Unconfigured Disks
, press
Enter
to display the choices, use the
arrow keys
to select
Yes
(to enable),
or
No
(to disable) and press
Enter
again to choose it.
3
Tab
to the
OK
button and press
Enter
.
You will notice a short delay as 3BM makes the policy changes.
Note:
It is recommended that JBODs not be made available to the operating
system. The advantages of working with configured Single Disks over JBOD are:
If interrupted, a single disk media scan will continue from where it left off, while a
JBOD media scan must restart from the beginning.
Single disks can take advantage of the controller caching and configuration is
persistent.
Single disks will be able to be migrated to redundant units in the future (e.g. A single
disk will be able to be mirrored to another drive, creating a RAID 1 array).
Note:
If you enable the Export JBOD Disks option, the controller recognizes and
displays as JBODs any drives that were previously connected to 3ware 7000/8000-
series controllers as JBODs. Drives that were previously connected to a 9000-
series controller and configured will not be seen as JBODs.
