Author: DFWguyDate: 18:15 15-05-08
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Looking to do the following:
I have a SATA drive I want to be able to disable the power to on
occasion. Long and short, 3 wires and 3 voltages that I want to be able
to cut off via a switch (don't wanna have to open up my rig and just
physically disconnect the power supply).
v1 ----- switch ------- drive v1
v2 ----- switch ------- drive v2
v3 ----- switch ------- drive v2
Short of installing 3 different simple toggles, how could I go about
doing this? Is there a "3 in 1" type toggle available that I'm missing?
TIA! :)
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Author: Rich GriseDate: 18:35 15-05-08
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On Thu, 15 May 2008 22:15:39 +0000, DFWguy wrote:
> Looking to do the following:
>
> I have a SATA drive I want to be able to disable the power to on
> occasion. Long and short, 3 wires and 3 voltages that I want to be able
> to cut off via a switch (don't wanna have to open up my rig and just
> physically disconnect the power supply).
>
> v1 ----- switch ------- drive v1
> v2 ----- switch ------- drive v2
> v3 ----- switch ------- drive v2
>
> Short of installing 3 different simple toggles, how could I go about
> doing this? Is there a "3 in 1" type toggle available that I'm missing?
>
Google for "triple-throw toggle switch" - try it with and without the
quotes.
Good Luck!
Rich
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Author: DFWguyDate: 18:39 15-05-08
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Rich Grise wrote:
> On Thu, 15 May 2008 22:15:39 +0000, DFWguy wrote:
>
>> Looking to do the following:
>>
>> I have a SATA drive I want to be able to disable the power to on
>> occasion. Long and short, 3 wires and 3 voltages that I want to be able
>> to cut off via a switch (don't wanna have to open up my rig and just
>> physically disconnect the power supply).
>>
>> v1 ----- switch ------- drive v1
>> v2 ----- switch ------- drive v2
>> v3 ----- switch ------- drive v2
>>
>> Short of installing 3 different simple toggles, how could I go about
>> doing this? Is there a "3 in 1" type toggle available that I'm
missing?
>>
> Google for "triple-throw toggle switch" - try it with and without the
> quotes.
>
> Good Luck!
> Rich
>
>
That sounds like the ticket. Off to Radio Shack. Thx! :)
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Author: Wim LewisDate: 18:40 15-05-08
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In article <fC2Xj.7692$0h.3489@trnddc02>, DFWguy <aol@aol.com> wrote:
>I have a SATA drive I want to be able to disable the power to on
>occasion. Long and short, 3 wires and 3 voltages that I want to be able
>to cut off via a switch (don't wanna have to open up my rig and just
>physically disconnect the power supply).
>
>v1 ----- switch ------- drive v1
>v2 ----- switch ------- drive v2
>v3 ----- switch ------- drive v2
>
>Short of installing 3 different simple toggles, how could I go about
>doing this? Is there a "3 in 1" type toggle available that I'm missing?
What you're looking for is a three-pole or "3PST" switch. (ST = single throw,
since you don't need multiple switch positions --- if you were switching
between two drives, e.g., you'd want a 3PDT (double throw) switch).
However, I'm dubious that the multi-Gbps SATA data will make it through
a run-of-the-mill switch intact, and I don't know whether it's safe to
disconnect the SATA drive's power without disconnecting the data lines.
(Actually I suspect it might be safe but don't blame me if you try it and
fry something.)
--
Wim Lewis <wiml@hhhh.org>, Seattle, WA, USA. PGP keyID 27F772C1
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Author: DFWguyDate: 20:12 15-05-08
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Wim Lewis wrote:
> In article <fC2Xj.7692$0h.3489@trnddc02>, DFWguy <aol@aol.com> wrote:
>> I have a SATA drive I want to be able to disable the power to on
>> occasion. Long and short, 3 wires and 3 voltages that I want to be able
>> to cut off via a switch (don't wanna have to open up my rig and just
>> physically disconnect the power supply).
>>
>> v1 ----- switch ------- drive v1
>> v2 ----- switch ------- drive v2
>> v3 ----- switch ------- drive v2
>>
>> Short of installing 3 different simple toggles, how could I go about
>> doing this? Is there a "3 in 1" type toggle available that I'm
missing?
>
> What you're looking for is a three-pole or "3PST" switch. (ST = single
throw,
> since you don't need multiple switch positions --- if you were switching
> between two drives, e.g., you'd want a 3PDT (double throw) switch).
>
> However, I'm dubious that the multi-Gbps SATA data will make it through
> a run-of-the-mill switch intact, and I don't know whether it's safe to
> disconnect the SATA drive's power without disconnecting the data lines.
The data isn't going thru the switch - only the juice. And as far as
leaving the data lines intact - I've done the same thing for a long time
on my IDE drive with no issues. No juice = no problems.
> (Actually I suspect it might be safe but don't blame me if you try it and
> fry something.)
>
>
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Author: John FieldsDate: 20:16 15-05-08
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On Thu, 15 May 2008 22:15:39 GMT, DFWguy <aol@aol.com> wrote:
>Looking to do the following:
>
>I have a SATA drive I want to be able to disable the power to on
>occasion. Long and short, 3 wires and 3 voltages that I want to be able
>to cut off via a switch (don't wanna have to open up my rig and just
>physically disconnect the power supply).
>
>v1 ----- switch ------- drive v1
>v2 ----- switch ------- drive v2
>v3 ----- switch ------- drive v2
>
>Short of installing 3 different simple toggles, how could I go about
>doing this? Is there a "3 in 1" type toggle available that I'm missing?
---
There may be, but it seems to me that what you're looking for is a
three-pole three position rotary switch which cuts out the different
drives sequentially, one at a time, while leaving the other two
operational.
Am I right?
JF
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Author: Peter BennettDate: 20:16 15-05-08
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On Thu, 15 May 2008 22:39:34 GMT, DFWguy <aol@aol.com> wrote:
>Rich Grise wrote:
>> On Thu, 15 May 2008 22:15:39 +0000, DFWguy wrote:
>>
>>> Looking to do the following:
>>>
>>> I have a SATA drive I want to be able to disable the power to on
>>> occasion. Long and short, 3 wires and 3 voltages that I want to be able
>>> to cut off via a switch (don't wanna have to open up my rig and just
>>> physically disconnect the power supply).
>>>
>>> v1 ----- switch ------- drive v1
>>> v2 ----- switch ------- drive v2
>>> v3 ----- switch ------- drive v2
>>>
>>> Short of installing 3 different simple toggles, how could I go about
>>> doing this? Is there a "3 in 1" type toggle available that I'm
missing?
>>>
>> Google for "triple-throw toggle switch" - try it with and without the
>> quotes.
That should be a "triple-pole" or "three circuit" switch.
Triple-throw toggle switches are generally made from unobtainium, so
may be hard to locate.
>>
>> Good Luck!
>> Rich
>>
>>
>That sounds like the ticket. Off to Radio Shack. Thx! :)
--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca
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Author: TamDate: 21:06 15-05-08
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"DFWguy" <aol@aol.com> wrote in message
news:fC2Xj.7692$0h.3489@trnddc02...
> Looking to do the following:
>
> I have a SATA drive I want to be able to disable the power to on occasion.
> Long and short, 3 wires and 3 voltages that I want to be able to cut off
> via a switch (don't wanna have to open up my rig and just physically
> disconnect the power supply).
>
> v1 ----- switch ------- drive v1
> v2 ----- switch ------- drive v2
> v3 ----- switch ------- drive v2
>
> Short of installing 3 different simple toggles, how could I go about doing
> this? Is there a "3 in 1" type toggle available that I'm missing?
>
> TIA! :)
If you want a switch at each drive to turn it OFF/ON you need a 3 pole
single throw (3PST) switch. You can get such from Digikey and Mouser (Look
up Alcoswitch). You don't need to disconnect ground; so if you just have +5
and +12V you only need a 2PST switch. There will be dozens like that
available, but one that costs $2 to $3 should be about right. Radio Shack
will have the 2PST, but probably not the 3PST.
If you want 1 switch to enable 1 of 2 drives, you need a 3P2T or 2P2T.
Again, radio Shack will have the 2P.
Any of these will look like a regular toggle switch with extra pins on the
back.
Tam
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Author: Tom BiasiDate: 07:00 16-05-08
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"DFWguy" <aol@aol.com> wrote in message
news:fC2Xj.7692$0h.3489@trnddc02...
> Looking to do the following:
>
> I have a SATA drive I want to be able to disable the power to on occasion.
> Long and short, 3 wires and 3 voltages that I want to be able to cut off
> via a switch (don't wanna have to open up my rig and just physically
> disconnect the power supply).
>
> v1 ----- switch ------- drive v1
> v2 ----- switch ------- drive v2
> v3 ----- switch ------- drive v2
>
> Short of installing 3 different simple toggles, how could I go about doing
> this? Is there a "3 in 1" type toggle available that I'm missing?
>
> TIA! :)+
Not a good idea to just let the drive crash.
Tom
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Author: Clint SharpDate: 16:19 17-05-08
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Author: Tom BiasiDate: 16:29 17-05-08
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Author: Clint SharpDate: 19:13 17-05-08
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In message <YKudnRXGV7Cj3bLVnZ2dnUVZ_trinZ2d@giganews.com>, Tom Biasi
<tombiasi@optonline.net> writes
>They do have an autopark feature but killing the power abruptly can still
>cause a crash. Less likely than years ago but still can happen. I see them.
Do tell, the auto park I have seen is not an electronic feature, it's
mechanical so sudden power outage shouldn't cause a crash, I'd be
interested if this isn't always the case.
>
>Tom
>
>
--
Clint Sharp
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Author: Tom BiasiDate: 08:15 18-05-08
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"Clint Sharp" <clint@clintsmc.demon.co.uk> wrote in message
news:Gg4ulxXVa2LIFwh2@clintsmc.demon.co.uk...
> In message <YKudnRXGV7Cj3bLVnZ2dnUVZ_trinZ2d@giganews.com>, Tom Biasi
> <tombiasi@optonline.net> writes
>>They do have an autopark feature but killing the power abruptly can still
>>cause a crash. Less likely than years ago but still can happen. I see
>>them.
> Do tell, the auto park I have seen is not an electronic feature, it's
> mechanical so sudden power outage shouldn't cause a crash, I'd be
> interested if this isn't always the case.
>>
>>Tom
>>
>>
>
> --
> Clint Sharp
You are probably right, if they are made properly.
Do a search for "MacBooks 2.5-inch drive failure"
It is not wise to kill power to a spinning drive;
and a crash is not always 'head hitting platter', its a term also for sudden
failure. Such as when software crashes or drive firmware is damaged.
When I first responded I meant 'suddenly removing power'
Tom
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Author: whit3rdDate: 13:54 18-05-08
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On May 15, 3:15=A0pm, DFWguy <a...@aol.com> wrote:
> I have a SATA drive I want to be able to disable the power
> Short of installing 3 different simple toggles, how could I go about
> doing this?
The normal way to accomplish this is to use removable
disk drive bays; look for "mobile rack" for a commonly
available brand of these. Power switching and sequencing
and even hotswap capability are available, anywhere
computer case components are sold.
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