SUN StorageTek 2540 Array degraded after powering on the trays inthe wrong order - data loss???

Hello,

I have a problem to loose data on two Expansion units (StorageTek 2501)
connected to the above mentioned controller - due to power up first the
controller and after it the 2 trays. This is exact the reverse order it
should be done - not giving the chance for the controller to recognize
disks within the trays. After this step all disks in the trays were
disabled.
To power off the whole storage and power it up again in the right order
doesn't change anything.
In the CAM(Commmon Array Manager)-Software for this sort of storage
there is no button to put the disk on "enabled".
For me it is a bug in the controller firmware, for SUN it is an
additional feature (to make the disk "online" again) which was not
intended for this storage (for StorageTek 6100-series there is such a
button).
Well I tried a couple of things - pull out the disks (SAS disks
hotpluggable) of the trays in poweroff state, and put them back again in
poweron state hoping the controller will recognize them again (correct
the DACstore on the disks), upgraded CAM-Software (along with
appropriate firmware), nothing helps. There is nothing wrong physically
neither with the disks nor with the storage - both are in good shape.

Is there a suggestion which could be helpfull or is the only way to look
for company specialized on restoring data from RAID systems - which
would be very expensive (but the data are also)?

Thanks in advance.