crazyjxx:
As you know, those particular mobile racks are designed for SATA hard
drives. We've no experience with the KF-83 but have worked with the
KF-91. Over the past year or so as we've moved more & more to SATA
drives, we've been looking over a variety of these mobile racks. The
KF-91 is (virtually) an all-aluminum model and seems to be
well-constructed. The small fan is at the rear of the rack.
There's one major problem with the KF-91 (don't know if it applies to
the KF-83) and that is the rack's power connector is *only* the 4-pin
Molex connector. In our view it's important, even crucial, that a
15-pin SATA power connector be available. In order for the SATA HD to
be "hot-pluggable", specifications call for it to be powered through
the 15-pin connector. Now I have to say that we've experimented with
"hot-plugging" SATA HDs while powered through the Molex plug and we've
not experienced any problems either affecting the drive or involving
loss of data. But again, our understanding is that one of the
requirements in the SATA specification for the device to be
hot-pluggable is that it be powered via its 15-pin SATA power
connector.
We've found another problem with this rack (at least it's a problem
for us) - it's a very tight fit to insert a HD in the removable tray
(caddy). You really have to force the drive into the tray. And, of
course, once you do, it's equally difficult to remove the drive from
the tray. We had four KF-91s and they all exhibited this tight fit.
This may not be very important to you but it is to us because in our
work we're frequently installing & removing drives in & out of their
trays. For many users this would not be terribly significant since
they infrequently insert & remove their drives in and from the
removable tray.
And there's another negative for us which may not be important to you
or most other users. We want to get away from the ubiquitous keylock
that's found on virtually every mobile rack. Again, in our work, we're
frequently inserting (connecting) & removing (disconnecting) the
removable drive from the computer and we simply find it a pain to use
the keylock. So we've been looking for a model that doesn't need this
feature but has an easy, effective, and "tooless" feature to make
these connects & disconnects.
The one we've been working with is the Athena MR-125 (comes in beige &
black) - sells for $24.99 (incl. shipping) at Newegg - see
http://www.newegg.com/Product/Product.asp?Item=N82E16817123301
It's an all-plastic model with an 80 mm (very large) fan at the bottom
of the rack. It has a simple ON-OFF button (we leave it always in the
ON position) and a lever that's simply released by a push button so
that a slight outward tug on the open lever causes the tray containing
the HD to be disconnected from the machine. A simple push of the lever
inward and the tray is reinserted and the connection made. Notice
there's no keylock mechanism and that's what we've been looking for.
This mobile rack does contain both the Molex power connector as well
as the 15-pin SATA power connector.
We've been working with a number of these racks for the past six
months or so and so far they've worked flawlessly. Their all-plastic
construction is not of particular concern for us. Over the years we've
worked with a variety of plastic mobile racks designed for PATA drives
and we've experienced few problems with them that could be traced to
their plastic construction. Heat-related problems have been virtually
non-existent in our experience whether one uses aluminum or plastic
racks.
Anna