[Nottingham] USB flashing your distro?
fluf at freeshell.org
Wed Apr 16 20:16:39 BST 2008
On Wed, 16 Apr 2008, Penfold Q wrote:
> As Cam has said, in embedded environments, regular incremental writing
> (appending to log files) causes these blighters to wear out really
> quickly. With a bug that caused writes every 5 milliseconds, we wore
> these disks out in a few hours. Sent them back to the manufacturer and
> they said the disks were worn out.
Thanks for the anecdote, Penfold; I always find real world experience
more interesting (and telling) than a manufacturer's pre-sale claims. :-)
> Plus undocumented firmware bugs in
> the CompactFlash controllers that you only get told about once you've
> fallen foul of them and all in all, CompactFlash was a pain to integrate
> into our embedded systems. Many of us would have preferred to stick with
> discrete flash devices that we can control the writes to more
> explicitly. Hey ho.
I suppose it's like anything, how does a "flash disk layperson" know which
flash disks are likely to fail quickly and which ones aren't (all
read/write useage being equal of course)? Obviously there's a lot of
underlying detail in how each model is constructed that is known only by
the few who design them and/or use them to their limits. The onlly thing
the larger majority of people purchasing them seem to pay much ttention to
is the capacity; build quality be damned. Just goes to show that we all
end up making assumptions in areas where we don't have extensive
expertise. It's like leaving the Finance department in charge of computer
purchasing; they'll likely just look at the processor speed, amount of
RAM, hard drive size, then go with whoever offers it the cheapest. Never
mind that the RAM is slow and has no capacity for error correction, the
processor is a crippled Celeron, the hard drive is stuck together with
"Fujitsu Glue", and it's all lovingly assembled and brought to us by the
zombies of Sir Alann Sugar.
But I digress...
Regarding the flash RAID, Martin, I can only agree with the author of the
first link's comment: "One word currently popping into my head to describe
it is: Ludicrous!! :) "
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