please state what kind of laptop you have, I would not recomend doing it with some of the larger screen laptops, weight issues, unless you are going to invent some kind of strap to wear the laptop, maybe you should check out last weeks team NETworth, they pitched that ideal,,,and THe mr trump fired the project manager....good luck
Not really, I wouldn't do it alot because the HD will take a jar when you put it down. It is best not to and Highly recommended to have the machine in one place when running.
Just checked out the firestore unit mentioned above and they claim that it has a 10 second shock cache...so jarring the hd would not cause write errors.
I wonder if it is possible to configure my inspiron to provide write protection against shock, maybe get a hd with a very large cache?
Just checked out the firestore unit mentioned above and they claim that it has a 10 second shock cache...so jarring the hd would not cause write errors.
I wonder if it is possible to configure my inspiron to provide write protection against shock, maybe get a hd with a very large cache?
No not really
HD's are not ment to be moved at all when running, there are no exceptions.
You're probably right and I do know how easily errors can be caused with my use of the minds@work, however...I just read this:
Q. How can you have a hard drive on a moving computer? Won't you lose data or wreck the hard drive if you walk around while using it? A. Many hard drives commonly used in laptop computers can withstand 100G operational shock. It is common to go jogging while editing, and sometimes to shoot documentary video while on horseback or riding a mountain bike down the center of a railway line, bumping over every railway tie, and capturing the experience on a hard drive.
(Frequently Asked Questions, Wearable Computing (FAQWearC.txt)
Prof. Steve Mann, University of Toronto
This text report attempts to answer some of the questions that have been asked during the past 20 to 25 years of my wearing personal technologies in the real world.)
>Just curious: which manufacturers are doing this? Are you referring to
>what IBM calls "HDD
Shock Absorber" (available on some Thinkpads)?
There are 2 approaches to
shock absorbing, and can be combined:
o
Drive sits in a
shock-absorber
---- Toughbook -- new use Poron, older use Sorbothane gel
-------- I think Poron gives same cushioning from less thickness
---- Dell -- old Dells had the
drive in a gel bag, now I think just some Latitudes
---- IBM -- some IBMs use a thin
shock absorbing membrane (Poron I guess)
o
Drive detects G acceleration & parks heads
---- IBM developed this to stop heads smacking into platters
---- basically it gouges the platter as it spins like a bouncing bomb
I suspect the IBM Thinkpads use both the G-detect & membrane.
Remember a drive has 2 shock limits, and a vibration limit: o Operating shock is *much* lower than non-operating shock ---- solution is a) sway space & cushioning -- poor in a laptop ---- alternatively b) detect the G & park the heads -- ideal in a laptop o Vibration limit which is very low for operating shock ---- solution is a visco-elastic cushioning material ---- basically a) absorbs 80-97% of the energy, b) slow rebound so doesn't double-G ---- additionally c) be as thin as possible -- re laptop packaging
Laptop packaging is really quite ugly: o PCBs can withstand 1,000G for short-duration -- risk is heatinks = copper = mass o Casing needs to be unbelievably stiff -- solution is mag-alloy or carbon-fibre o Hard-drives are the risk factor -- laptop can be replaced/insured, HD can't
The Toughbooks sound a good idea - but are very expensive: o It is not expensive to shock mount just the HD -- and insure the rest ---- in terms of TCO it is actually far more economic than a Toughbook o Toughbooks are about usability in such environments ---- not just shock, but water - and ability to keep operating
All laptop makers could introduce a 3mm pad around the HD: o E-A-R ConFor foam -- downside is hardness at low temps, less of a risk for laptops o Sorbothane gel -- proven on the early P1 & P2 Toughbooks o Poron material -- proven to give benefit in less than 3mm & used in medicine
Poron is well proven in the medical area, as is ConFor foam.
The simplest would be to stick a 2.5" drive in an external case and fit some corner pads of Sorbothane. That drive is then both portable, external (offline + elsewhere), and also offers a degree of ruggedness to protect what matters - the data. Even simpler is to backup to a remote server somewhere, for some that can be too difficult re bandwidth & data-set size, but for others it's a useful option. Many ISPs give free web/ftp-space, WinZIP supports AES encryption etc. -- Dorothy Bradbury
You're probably right and I do know how easily errors can be caused with my use of the minds@work, however...I just read this:
Q. How can you have a hard drive on a moving computer? Won't you lose data or wreck the hard drive if you walk around while using it? A. Many hard drives commonly used in laptop computers can withstand 100G operational shock. It is common to go jogging while editing, and sometimes to shoot documentary video while on horseback or riding a mountain bike down the center of a railway line, bumping over every railway tie, and capturing the experience on a hard drive.
(Frequently Asked Questions, Wearable Computing (FAQWearC.txt)
Prof. Steve Mann, University of Toronto
This text report attempts to answer some of the questions that have been asked during the past 20 to 25 years of my wearing personal technologies in the real world.)
Yeah right.......I am not buying that one.
Have you seen a LT drive, held it in your hand?
It is common to go jogging while editing, and sometimes to shoot documentary video while on horseback or riding a mountain bike down the center
Even SCSI drives aren't supposed to be moved while running and they are the most durable HD's on the market.
Message Edited by jankerson on 04-09-2005 07:08 PM
I am sure NASA< has such a laptop, but, then again we have price to consider, but then again, they can spend $500.00 on a tolet seat>?:smileyvery-happy:
@powderoo wrote:
I am sure NASA< has such a laptop, but, then again we have price to consider, but then again, they can spend $500.00 on a tolet seat>?:smileyvery-happy:
powderoo
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April 9th, 2005 13:00
jankerson
2.8K Posts
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April 9th, 2005 14:00
Jerking Lotion
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April 9th, 2005 19:00
Just checked out the firestore unit mentioned above and they claim that it has a 10 second shock cache...so jarring the hd would not cause write errors.
I wonder if it is possible to configure my inspiron to provide write protection against shock, maybe get a hd with a very large cache?
jankerson
2.8K Posts
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April 9th, 2005 19:00
No not really
HD's are not ment to be moved at all when running, there are no exceptions.
Jerking Lotion
23 Posts
0
April 9th, 2005 21:00
You're probably right and I do know how easily errors can be caused with my use of the minds@work, however...I just read this:
Q. How can you have a hard drive on a moving computer? Won't you lose data or wreck the hard drive if you walk around while using it?
A. Many hard drives commonly used in laptop computers can withstand 100G operational shock. It is common to go jogging while editing, and sometimes to shoot documentary video while on horseback or riding a mountain bike down the center of a railway line, bumping over every railway tie, and capturing the experience on a hard drive.
http://wearcam.org/faq.htm
(Frequently Asked Questions, Wearable Computing (FAQWearC.txt) Prof. Steve Mann, University of TorontoThis text report attempts to answer some of the questions that have been asked during the past 20 to 25 years of my wearing personal technologies in the real world.)
jankerson
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April 9th, 2005 22:00
Dells are not like that at all.
It is fine to walk around or move them once in a while, we all have, but I wouln't make a habit out of it.
Jerking Lotion
23 Posts
0
April 9th, 2005 22:00
and google groups provided this, interesting shock absorption stuff:
>what IBM calls "HDD Shock Absorber" (available on some Thinkpads)?
o Drive sits in a shock-absorber
---- Toughbook -- new use Poron, older use Sorbothane gel
-------- I think Poron gives same cushioning from less thickness
---- Dell -- old Dells had the drive in a gel bag, now I think just some Latitudes
---- IBM -- some IBMs use a thin shock absorbing membrane (Poron I guess)
o Drive detects G acceleration & parks heads
---- IBM developed this to stop heads smacking into platters
---- basically it gouges the platter as it spins like a bouncing bomb
I suspect the IBM Thinkpads use both the G-detect & membrane.
Remember a drive has 2 shock limits, and a vibration limit:
o Operating shock is *much* lower than non-operating shock
---- solution is a) sway space & cushioning -- poor in a laptop
---- alternatively b) detect the G & park the heads -- ideal in a laptop
o Vibration limit which is very low for operating shock
---- solution is a visco-elastic cushioning material
---- basically a) absorbs 80-97% of the energy, b) slow rebound so doesn't double-G
---- additionally c) be as thin as possible -- re laptop packaging
Laptop packaging is really quite ugly:
o PCBs can withstand 1,000G for short-duration -- risk is heatinks = copper = mass
o Casing needs to be unbelievably stiff -- solution is mag-alloy or carbon-fibre
o Hard-drives are the risk factor -- laptop can be replaced/insured, HD can't
The Toughbooks sound a good idea - but are very expensive:
o It is not expensive to shock mount just the HD -- and insure the rest
---- in terms of TCO it is actually far more economic than a Toughbook
o Toughbooks are about usability in such environments
---- not just shock, but water - and ability to keep operating
All laptop makers could introduce a 3mm pad around the HD:
o E-A-R ConFor foam -- downside is hardness at low temps, less of a risk for laptops
o Sorbothane gel -- proven on the early P1 & P2 Toughbooks
o Poron material -- proven to give benefit in less than 3mm & used in medicine
Poron is well proven in the medical area, as is ConFor foam.
The simplest would be to stick a 2.5" drive in an external case and fit some corner
pads of Sorbothane. That drive is then both portable, external (offline + elsewhere),
and also offers a degree of ruggedness to protect what matters - the data.
Even simpler is to backup to a remote server somewhere, for some that can be too
difficult re bandwidth & data-set size, but for others it's a useful option. Many ISPs
give free web/ftp-space, WinZIP supports AES encryption etc.
--
Dorothy Bradbury
http://groups-beta.google.com/group/comp.sys.laptops/browse_thread/thread/e14e97ed8582657c/59671bd644fd4de5?q=hard+drive+laptop+shock&rnum=1#59671bd644fd4de5
jankerson
2.8K Posts
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April 9th, 2005 22:00
Yeah right.......I am not buying that one.
Have you seen a LT drive, held it in your hand?
Even SCSI drives aren't supposed to be moved while running and they are the most durable HD's on the market.
Message Edited by jankerson on 04-09-2005 07:08 PM
powderoo
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April 9th, 2005 22:00
jankerson
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April 9th, 2005 22:00
Yeah we can't afford $500,000 Laptops. ROFL