🚀 go-pugleaf

Greetings.
    We have several DECstation 3100 with RZ24, RZ55 & RZ56 drives.   Since the
time we received the machines, we have claimed that the drives are too noisy. 
DEC was willing to replace the drives once, however only the RZ24 replacement
worked. The new RZ24 is absolutely quite, while the RZ55 and RZ56 drives are
still very noisy (especially the RZ55).  At this point, our local DEC
engineers claim that this "must be a normal noise" and they are not aware of
similar noise problems elsewhere...  Our claim is that if DEC considers such
level of noise "normal", it must be that they never designed these drives for
an office environment...
    I am trying to collect any evidence available to prove that this IS a known 
problem and it was treated elsewhere (I recall reading about it somewhere,
before we had our DECstations).  I would appreciate any input on this issue.

Thanks.