Mylex DAC960PD experiment

[lexar]

 I have 6 x maxtor atlas 36gb scsi 320 drives in hotswapable
drive trays in a 2 channel chassis. I picked up a Mylex DAC960PD
really cheap on ebay for learning about RAID. I didn't want to
drop alot of $$$ until I really know what I want and there seem
to be many choices ...
 I obviously am not getting this off-the-bat.
 This is what I have tried:
 1) I flash upgraded the card (FBSD kernel warned me it was too
old).
 2) I ran the daccf util, chose 'automatic configuration', it said that
RAID 5 was the default.
 3) I initialized the 'system drive' (took forever, I guess this is a slow
card).
 4) I only get 32 GB yield:
# /dev/mlxd0c:
type: ESDI
disk: mlxd0s1
label:
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 128
sectors/cylinder: 4096
cylinders: 16381
sectors/unit: 67100640
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # milliseconds
track-to-track seek: 0  # milliseconds
drivedata: 0

8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  c: 67100640        0    4.2BSD     2048 16384    89   # (Cyl.    0 - 
16381*)

 And when I try mlxcontrol, it says :
newgate# mlxcontrol status
mlx0: DAC960P/PD, 3 channels, firmware 2.73- -48, 4MB RAM
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlx0: command failed - rebuild successfully terminated
mlxd0: critical

 The critical I understand, I build a fileystem on the 32 GB array and
turned off one drive. Which brings up another question: is there the
possibility (with this or any other controller) for rebuilding the array
without bringing the machine down?
 Shouldn't 6 x 36GB on RAID 5 yeild 180Gb?

 Bios start up screen :
DAC960P BIOS Version 1.41 - 15 May 96
Mylex Corporation

Spinning up drives .........
DAC960 Firmware Version 2.73-0-0
DAC960 Memory = 4 Mbytes (DRAM)
WARNING: 1 system drive is critical
WARNING: The following SCSI device is dead :
  Chn 0, Tgt 2
BIOS Enabled - Press <Alt-M> to Disable BIOS
1 system drive installed
Press any key to continue

 Dmesg output :
mlx0: DAC960P/PD, 3 channels, firmware 2.73-0-00, 4MB RAM
mlxd0: <Mylex System Drive> on mlx0
mlxd0: 32765MB (67102720 sectors) RAID 5 (critical)

 TIA for any help I recieve.