j...@mercury.lcs.mit.edu (Noel Chiappa) wrote:
> > From: Alan Frisbie
>
> > Harbor Freight sells a nice hydraulic lift table for under $200 that I
> > have found very useful for that sort of thing. It doesn't go up very
> high
> > (like for the top of a rack), but I used it with s
On 2/11/19 10:48 AM, Tapley, Mark via cctalk wrote:
> Jack, this looks like a pretty good idea in the short term. But, every piece
> of concrete I have ever been associated with has been off-gassing water at a
> slow rate. I have stored wood face-down on concrete enough times that I
> should kn
> On Feb 11, 2019, at 2:14 PM, Jack Harper via cctalk
> wrote:
>
> At 11:48 AM 2/11/2019, Tapley, Mark wrote:
>> ...
>> Jack, this looks like a pretty good idea in the short term. But, every piece
>> of concrete I have ever been associated with has been off-gassing water at a
>> slow rate.
At 11:48 AM 2/11/2019, Tapley, Mark wrote:
> On Feb 11, 2019, at 12:24 PM, Jack Harper via
cctalk wrote:
>
> At 10:16 AM 2/11/2019, Fred Cisin via cctalk wrote:
>> ...Need to bolt the rear to the floor, or
something SOLID, and extend the "footprint" of
the front to include where the center of
> On Feb 11, 2019, at 12:24 PM, Jack Harper via cctalk
> wrote:
>
> At 10:16 AM 2/11/2019, Fred Cisin via cctalk wrote:
>> ...Need to bolt the rear to the floor, or something SOLID, and extend the
>> "footprint" of the front to include where the center of gravity is when
>> fully extended. An
At 10:16 AM 2/11/2019, Fred Cisin via cctalk wrote:
On Mon, 11 Feb 2019, Jack Harper via cctalk wrote:
Hello Chuck -
I like the idea of those sliding rails - and they appear by the
link to be good to 200-pounds.
However, with the HP7970 Drives, I would worry about the moment
pressure exerted o
> From: Alan Frisbie
> Harbor Freight sells a nice hydraulic lift table for under $200 that I
> have found very useful for that sort of thing. It doesn't go up very high
> (like for the top of a rack), but I used it with some wood blocks
Thanks for the tip! I got one on sale for
On 2/11/19 9:16 AM, Fred Cisin via cctalk wrote:
> A few hundred pounds slid all the way out will topple it.
> If the center of gravity is NOT within the perimeter of the base, . . .
> Need to bolt the rear to the floor, or something SOLID, and extend the
> "footprint" of the front to include wher
On Mon, 11 Feb 2019, Jack Harper via cctalk wrote:
Hello Chuck -
I like the idea of those sliding rails - and they appear by the link to be
good to 200-pounds.
However, with the HP7970 Drives, I would worry about the moment pressure
exerted on the rack with the unit slid all the way out.
. . .
At 11:39 AM 2/7/2019, Chuck Guzis via cctalk wrote:
On 2/7/19 9:16 AM, Jack Harper via cctalk wrote:
> I mounted the two HP7970 Drives in a non-HP rack - just a standard
> six-foot 19" rack that I found a few years ago.
>
> I installed two heavy aluminum rails (1/8" thick and perhaps 2" on the
>
On Wed, 6 Feb 2019, Chuck Guzis via cctalk wrote:
Ratchet right-angle screwdrivers are also an option, as are ball-end
allen wrenches or offset-head screwdrivers. None are particularly dear.
After half a century of using the cheap crap, first the stamped chrome
ones, and then the black ones f
On 2/7/19 9:16 AM, Jack Harper via cctalk wrote:
> I mounted the two HP7970 Drives in a non-HP rack - just a standard
> six-foot 19" rack that I found a few years ago.
>
> I installed two heavy aluminum rails (1/8" thick and perhaps 2" on the
> two sides - angle stock) for each Drive to support t
Great information Alan -
I appreciate it.
Regards to the List,
Jack in the Rocky Mountains
At 04:43 PM 2/6/2019, Alan Frisbie via cctalk wrote:
Jack Harper wrote:
I got both drives into the rack this past weekend and I am an old guy
(67) - I carefully stared at the thing before I start
At 11:09 AM 2/6/2019, Jay West wrote:
Chuck's retension levers any chance this is on thingiverse or would you
be willing to send me the .stl file so I can 3dprint my own? :)
I have not looked at my 7970's in quite some time, but I had thought the
previous discussion was for mounting the 7
Brent wrote...
There's no way you're angling a regular shafted screwdriver in there to
adequately tighten screws.
One could undo the catch that limits the angle of swing, but I still don't
expect it's going to swing far enough to get the frame out of the way, let
alone the PCBs and motors still i
On 2/6/19 10:42 PM, Brent Hilpert via cctalk wrote:
> Well, maybe they changed the hinge design slightly for the model you're
> looking at.
> Here are some pics of the 7970A with the transport open at 90 deg:
> http://madrona.ca/tmp/HP7970A/hingeTop.jpg
> http://madrona.ca/tmp/HP7970A
On 2019-Feb-06, at 7:48 PM, Chuck Guzis via cctalk wrote:
> On 2/6/19 6:33 PM, Brent Hilpert via cctalk wrote:
>
>> Granted you could drill the holes from the rear of the flange,
>> however from what I can see the hinge design doesn't look like it
>> will allow the transport frame to swing far eno
On 2/6/19 6:33 PM, Brent Hilpert via cctalk wrote:
> Granted you could drill the holes from the rear of the flange,
> however from what I can see the hinge design doesn't look like it
> will allow the transport frame to swing far enough to clear access
> for the screwdriver shaft to tighten the sc
On 2019-Feb-06, at 4:19 PM, Chuck Guzis via cctalk wrote:
> On 2/6/19 2:29 PM, Brent Hilpert via cctalk wrote:
>
>> (I take it you mean "now look at the -left- side".)
>
> Well, you know, my *other* right... :)
>
>> However, looking at my 7970A, it appears you could separate the cast-Al
>> tran
On 2/6/19 2:29 PM, Brent Hilpert via cctalk wrote:
> (I take it you mean "now look at the -left- side".)
Well, you know, my *other* right... :)
> However, looking at my 7970A, it appears you could separate the cast-Al
> transport frame from the chassis box
> by unscrewing the 4 exterior left-si
Jack Harper wrote:
I got both drives into the rack this past weekend and I am an old guy
(67) - I carefully stared at the thing before I started and finally
figured out that I could, in fact, lift the drive from a waist high
cart for a few seconds, but definitely could not lift it or lower it
v
On 2019-Feb-06, at 12:24 PM, Chuck Guzis via cctalk wrote:
> On 2/6/19 11:25 AM, Jay West wrote:
>
>> Yes, it's all "standard 19 inch" but. the HP gear and mounting
>> kits of that time expected certain things to be present in the rack
>> design/construction well beyond just the space betwe
On 2/6/19 11:25 AM, Jay West wrote:
> Yes, it's all "standard 19 inch" but. the HP gear and mounting
> kits of that time expected certain things to be present in the rack
> design/construction well beyond just the space between the vertical
> posts.
>
> As I recall, on the left, the flange (w
Chuck wrote...
--
The HP disk array rack is a pretty standard 19" EIA rack, with some extra slots
for mounting the disk drive slides.
Looking at the 7970, without the mounting kit, it's a standard 19" wide.
The right side flange has holes for mounting; the left side (the side with the
s
On 2/6/19 10:09 AM, Jay West wrote:
> I have not looked at my 7970's in quite some time, but I had thought the
> previous discussion was for mounting the 7970's in an HP rack. Not all later
> HP racks, but the 2 or 3 series that were predominant around the time of the
> 7970's, had a very specific
Chuck's retension levers any chance this is on thingiverse or would you
be willing to send me the .stl file so I can 3dprint my own? :)
I have not looked at my 7970's in quite some time, but I had thought the
previous discussion was for mounting the 7970's in an HP rack. Not all later
HP racks
At 01:59 PM 2/5/2019, you wrote:
by my lonesome, I was determined not to repeat the process. The rack,
VTW, is from an old HP Storage Array, which has a nice anti-tip pullout
on the bottom.
I constructed a dolly for the HP drive that allows me to roll it around
where I need it. It's low enough
At 06:53 PM 2/5/2019, you wrote:
Some years ago, Jay recommended a Genie Load Lifter to me (thank
you!), and I was fortunate enough to get two of them as "new old
stock" for about half price. They're relatively inexpensive and
absolutely invaluable. Put a 200lb unit into the top of a full
On 05/02/2019 20:59, Chuck Guzis via cctalk wrote:
On 2/5/19 12:19 PM, Jack Harper via cctalk wrote:
I learned that very quickly - If you open the front of the Drive and
swing out the door with the electronics, drive motors etc, it is
definitely heavy enough to tip a rack.
I bolted the destin
On 2/5/19 12:19 PM, Jack Harper via cctalk wrote:
>
>
> Greetings to the List -
>
> My very sincere THANKS for the enlightening responses from Chuck Guzis,
> Brent Hilpert and Jay West on mounting the HP 7970 tape drive Beasts.
>
> I am out of town on business for a couple days and will inspect
Greetings to the List -
My very sincere THANKS for the enlightening responses from Chuck
Guzis, Brent Hilpert and Jay West on mounting the HP 7970 tape drive Beasts.
I am out of town on business for a couple days and will inspect
things when I return.
Chuck is, of course, 100% correct o
Brent wrote...
---
The right side of the drive (should) have little pieces of 1/8" thick
aluminum glued at the back of the rack-mount holes to match the thickness of
the left-side bracket, to make the drive seat parallel to the face of the
rack.
In my (limited) experience th
I'm sure there is a post in the archives about this...
There is a special custom HP bracket on the left. It is a heavy piece of
steel - and it MUST be, due to the weight and movement (swing out) of the
unit. I'm used to finding ways for one person to do a two man job when
mounting things in racks,
On 2019-Feb-04, at 3:40 PM, Jack Harper via cctalk wrote:
>
> I am mounting a couple of heavy (130-pounds each) HP7970e tape drives to a
> 19" rack.
>
> The screw holes that mate to the standard spaced holes on the right side of
> the drive after you open the case are visible and obvious.
>
>
On 2/4/19 3:40 PM, Jack Harper via cctalk wrote:
>
>
> Greetings to the List -
>
> I am mounting a couple of heavy (130-pounds each) HP7970e tape drives to
> a 19" rack.
>
> The screw holes that mate to the standard spaced holes on the right side
> of the drive after you open the case are visib
Greetings to the List -
I am mounting a couple of heavy (130-pounds each) HP7970e tape drives
to a 19" rack.
The screw holes that mate to the standard spaced holes on the right
side of the drive after you open the case are visible and obvious.
However, the holes on the left are hidden un
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