You can get detailed information by looking at the directory /proc/scsi/fasttrak/

In that directory, you will see the file which corresponds to your array.

# cat /proc/scsi/fasttrak/0
Promise FastTrak Series Linux Driver Version 1.2.0.14
Adapter1 - FASTTRAK100 TX2
Array    - Array[1] : 1X2 Mirror (OK)
Drive    -
  1 : IC       Primary  /Master  41174MB BASE(0xb400) BM(0xc400) IRQ(11) UDMA5
  3 : IC       Secondary/Master  41174MB BASE(0xbc00) BM(0xc408) IRQ(11) UDMA5

That is all.