Here's how to check the raid on ifaps1 (which also works on some of the other machines).

as root, to get the controller id:

[root@ifaps1 ~]$ /usr/local/bin/tw_cli info
Ctl   Model        (V)Ports  Drives   Units   NotOpt  RRate   VRate  BBU
------------------------------------------------------------------------
c4    9650SE-24M8  24        24       2       0       5       1      OK       

then you can find out more information on the ctl associated with that raid (in this case, c4):

[root@ifaps1 ~]$ /usr/local/bin/tw_cli /c4 show
Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  Cache  AVrfy
------------------------------------------------------------------------------
u0    RAID-1    OK             -       -       -       1862.63   RiW    ON     
u1    RAID-6    OK             -       -       256K    37252.7   RiW    OFF    

Port   Status           Unit   Size        Blocks        Serial
---------------------------------------------------------------
p0     OK               u0     1.82 TB     3907029168    WD-WCAVY0653602     
p1     OK               u0     1.82 TB     3907029168    WD-WCAVY0673230     
p2     OK               u1     1.82 TB     3907029168    WD-WCAVY0674745     
p3     OK               u1     1.82 TB     3907029168    WD-WCAVY0656538     
p4     OK               u1     1.82 TB     3907029168    WD-WCAVY5539814     
p5     OK               u1     1.82 TB     3907029168    WD-WCAVY5320380     
p6     OK               u1     1.82 TB     3907029168    WD-WCAVY0660537     
p7     OK               u1     1.82 TB     3907029168    WD-WCAVY0983248     
p8     OK               u1     1.82 TB     3907029168    WD-WCAVY0786583     
p9     OK               u1     1.82 TB     3907029168    WD-WCAVY0564035     
p10    OK               u1     1.82 TB     3907029168    WD-WCAVY0647809     
p11    OK               u1     1.82 TB     3907029168    WD-WMAY01984345     
p12    OK               u1     1.82 TB     3907029168    WD-WCAVY6536744     
p13    OK               u1     1.82 TB     3907029168    WD-WCAVY6363147     
p14    OK               u1     1.82 TB     3907029168    WD-WCAVY3692199     
p15    OK               u1     1.82 TB     3907029168    WD-WCAVY2163149     
p16    OK               u1     1.82 TB     3907029168    WD-WCAVY0673357     
p17    OK               u1     1.82 TB     3907029168    WD-WCAVY0667021     
p18    OK               u1     1.82 TB     3907029168    WD-WCAVY0864538     
p19    OK               u1     1.82 TB     3907029168    WD-WCAVY0667621     
p20    OK               u1     1.82 TB     3907029168    WD-WCAVY0891109     
p21    OK               u1     1.82 TB     3907029168    WD-WCAVY0673145     
p22    OK               u1     1.82 TB     3907029168    WD-WCAVY0667973     
p23    OK               u1     1.82 TB     3907029168    WD-WCAVY1075788     

Name  OnlineState  BBUReady  Status    Volt     Temp     Hours  LastCapTest
---------------------------------------------------------------------------
bbu   On           Yes       OK        OK       OK       199    15-Feb-2011  

This raid is OK.

When the raid array is being verified:

root# /usr/local/bin/tw_cli /c5/u0 show verifystatus

When the raid array is being rebuilt:

root# /usr/local/bin/tw_cli show rebuildstatus