raid going off line

[BabaG]

i've been trying to render out a series of stills as a qt from final cut
and the raid, software raid set up through the disk utility, keeps
failing in the process. the drive icon disappears from the desktop
as well.

when i look at the drives in the utility, they are there but not as an
array, just as the individual drives. i know this is vague but i'm at
something of a loss over this.

can someone point me toward some methodologies as to how to
get this fixed? or is this a known thing in certain software raid
configs?

the raid is a norco 1220 with 5 sata drives. the drives are all
wd 500gb. the box has two raid channels and two individual
channels. this only works with the proprietary card though which
doesn't work with 10.4.8, which this is. because of that i have
an e4p sonnet card providing 4 sata ports. the box is set up as
jbod. two drives are in its channel 1 bays and striped via the
disk utility. two drives are in the channel 2 bays, also striped.
there is one solo drive in one of the individual channels.

thanks for any tips or info on this issue,
BabaG

 

[BabaG]

seems to have been corrupted files. a few of the files in the
image sequence were corrupt and each time final cut would
encounter them, the raid would freeze and crash.

was able to isolate the individual files by manually doing a
sort of recursive file copy, copying groups of files from one
drive to another. when the copy process would hit one of
the bad files it would put up an error with the file name
when it crashed.

i did this repeatedly throughout the files of the image
sequence until i'd found all the files that would copy and
which ones wouldn't. i then replaced the bad files with
good ones and all is working.

does anyone know of a better way to testing for the bad
files? this method, while functional, is very time consuming.

thanks,
BabaG