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 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
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