Hi Kirk,
You must be very lucky. I have a whole stack of dead drives. When a hard
drive fails it is very often catastrophic failure and you lose
everything. One day it's working fine, the next day it won't boot.
With Flash if you do get a failure it is likely to only be a few bits
which can
Just as another data point, many of the Netbooks come with a solid
state drive, and most are running some form of linux too.
An example would be the Asus EePC, for which Crucial suggest the following:
http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=255C2650A5CA7304
--
atp
On Mon, 23 Nov 2009 08:06:18 +, you wrote:
You must be very lucky. I have a whole stack of dead drives. When a hard
drive fails it is very often catastrophic failure and you lose
everything. One day it's working fine, the next day it won't boot.
You must have had the same batch of Craptor
I've been a diehard Seagate fan but recently I have heard some people
having problems with 1TB Seagate drives.At some point the dropping
price and the increasing density is going to become a quality issue -
perhaps that day is close?
Yes, I lived through the Maxtor problems also. I got a
The trick is to turn off virtual memory. Obviously you must have enough
ram to handle this. If you are just running emc then the memory
requirements are fairly low. 512M works well on my lathe.
There are other workarounds as I describe on the wiki page.
Les
RogerN wrote:
I'm not sure if
There are two potential issues with CF cards in IDE adapters. Some
adapters don't implement UDMA correctly which can cause problems. With
windows you get intermittent read and write errors. With Linux the
kernel usually crashes when it tries to mount the drive. Also some cards
report
Is there any advantage to using a CF or thumb drive as opposed to a 2.5
or 1 hard disk? Physical size should not be a big issue since most
machines and equipment boxes usually are fairly large. The difference in
power consumption and price between a flash drive and a small hard disk
compared to
Kirk,
My machine which is located in a conditioned by God shop goes
through terrible cycles of temperature and humidity. I found by
stressing hard drives this way, I was loosing about 1 year! I
changed to the CF card (solid state drive if you will) and found the
machine to be much more
RogerN wrote:
Anyway, if Linux uses a drive as virtual memory, I would think it would have
the potential to wear out a CF card fairly quickly, though their may already
be work arounds for it.
You have to overload memory on a Linux system pretty badly to make it
start swapping.
I have run
The main reason for me is reliability. Generally hard drives are the
least reliable part of a computer. I am fed up with swapping out failed
hard drives.
Les
Kirk Wallace wrote:
Is there any advantage to using a CF or thumb drive as opposed to a 2.5
or 1 hard disk? Physical size should not
On Sun, 2009-11-22 at 22:46 +, Leslie Newell wrote:
The main reason for me is reliability. Generally hard drives are the
least reliable part of a computer. I am fed up with swapping out failed
hard drives.
Les
I am not trying to disagree, but my experience has not indicated that
hard
You can oftentimes set things up so writes never occur to the CF card
unless it is deliberate.
In that case they really should never wear out since they are not being
rewritten.Flash cards are suppose to be good for at least 10 years
as far as data retention.
I don't expect any hard
On Sat, Nov 21, 2009 at 10:34 PM, David Winter
davidwin...@hondaracing.freeserve.co.uk wrote:
Dear All,
Anyone used a CF card as a hard drive? I thought I read
here that someone has done it
but I searched the wiki and didn't find anything. I have a card and
adapter which I
- Original Message -
From: Kirk Wallace kwall...@wallacecompany.com
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Sunday, November 22, 2009 5:25 PM
Subject: Re: [Emc-users] Compact Flash card for Hard Drive
On Sun, 2009-11-22 at 22:46 +, Leslie Newell
Well. I did a search of MTBF for Compact flash cards and I found
everything from 500,000 hours to 4 million hours of operation. Since
500,000 hours is 57 years, then 4,000,000 hours is about 450 years.
I'm ok with a 57 year life span. I recently bought and installed a
bunch of 30
Dave wrote:
Well. I did a search of MTBF for Compact flash cards and I found
everything from 500,000 hours to 4 million hours of operation. Since
500,000 hours is 57 years, then 4,000,000 hours is about 450 years.
This MTBF stuff is TOTAL crap! It all comes from a reliability
Dear All,
Anyone used a CF card as a hard drive? I thought I read
here that someone has done it
but I searched the wiki and didn't find anything. I have a card and
adapter which I have partitioned
with fdisk and formatted using format c: /s ( DOS ) but my PC
won't
David Winter wrote:
Dear All,
Anyone used a CF card as a hard drive? I thought I read
here that someone has done it
Les Newell did it.
but I searched the wiki and didn't find anything.
Here's his wiki page:
David,
I googled 'boot linux from compact flash' and got 831,000 results.
I looked at a couple, for example
www.linuxjournal.com/article/4551
which seemed to give a pretty good explanation of how to boot linux from
a CF card. Several people have done this, I think one of the guy's in
the
I have done quite a few of these now.
Unless you know your card adapter can handle UDMA, disable it. Not all
card adapters are wired for UDMA and you get all sorts of problems if
you try to use UDMA on them. As far as I know all SATA CF card adapters
can handle UDMA. It may give you a bit more
On Saturday 21 November 2009, David Winter wrote:
Dear All,
Anyone used a CF card as a hard drive? I thought I read
here that someone has done it
but I searched the wiki and didn't find anything. I have a card and
adapter which I have partitioned
with fdisk and formatted using
I have Linux boxes that boot off a CFLASH
things to know:
- CFLASH will wear out so create a RAM-drive for your logs.
- Get a big CFALASH so the wear leveling can do it's thing.
- Turn off atime - so it won't write every time you read.
Doing this is cleaner in Debian ( EMC belongs on Debian
Hi Gene,
But booting a normal linux like the version we use for emc, that uses ext3 as
the filesystem would probably use it up in a week or 2.
Don't underestimate the number of write cycles a CF card can handle. As
long as you disable atime and stick the logs into a ram drive, as I
It seems to me that UBUNTU is debian, sort of.
On Sat, 2009-11-21 at 11:45 -0600, Karl Schmidt wrote:
I have Linux boxes that boot off a CFLASH
things to know:
- CFLASH will wear out so create a RAM-drive for your logs.
- Get a big CFALASH so the wear leveling can do it's thing.
- Turn
David Winter wrote:
Dear All,
Anyone used a CF card as a hard drive?
They are kind of slow. Not too bad to read, but still can be a couple
megabytes a second, depending a lot on the adaptor. But, the write speed
can be REALLY slow, vastly slower than a normal hard drive.
I
a CF card fairly quickly, though their may already
be work arounds for it.
RogerN
- Original Message -
From: David Winter davidwin...@hondaracing.freeserve.co.uk
To: emc-users@lists.sourceforge.net
Sent: Saturday, November 21, 2009 9:34 AM
Subject: [Emc-users] Compact Flash card
I have some Windows based systems running off CF cards. I found that
some low dollar IDE to CF adapters simply would not work to boot windows
reliably. I ended up buying some more expensive Addonics SATA to CF
adapters and that solved the boot issues that I ran into.I used
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