====== tw_cli ======
tw_cli is the CLI for monitoring and maintaining 3ware RAID controllers. It can be used for all maintenance operations that can be performed through the 3dmd daemon or the system BIOS.

==== Checking the status of controller, array or disk ====
<code bash | list controllers in the machine >
info 
</code>
<code bash | list the disks on controller 1 and their grouping into RAID arrays >
info c1
</code>
<code bash | list the disks in RAID unit 2 and their status within the array. Useful to find out which disk is bad in a DEGRADED array. >
info c1 u2
</code>
<code bash | list the status of an individual disk >
info c1 p2
</code>
<code bash | for experts: show low-level error log output for the controller >
info c1 diag
</code>

==== Removing a disk ====

<code bash | remove disk p2 from c1 array>
maint remove c1 p2
</code>

==== Re-detecting a disk ====
It varies based on your version of tw_cli.

<code bash | rescan or add you can use any one of them based on version OR try from top to bottom stop when succeed>
rescan c1
OR
maint rescan c1
OR
maint add c1 p2
</code>

==== Rebuilding an array ====
<code bash | After rescan you need to rebuild>
maint rebuild c1 u2 p2
</code>

==== Creating a RAID unit ====
== RAID1 ==
<code bash>
maint createunit c1 rraid1 p2:3
</code>

== RAID5 ==
<code bash>
maint createunit c1 rraid5 p0:1:2:3:4:5:6
</code>


==== Assigning a disk as a 'hot spare' ====

<code bash>
maint createunit c1 rspare p2
</code>