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Number   :  4216
Date     :  2003-04-05
Author   :  james sadler
Subject  :  Re: A thought on the Mobil-Rack (disk tray)
Size(KB) :  2


 I beleive that systems already exist that will
boot from the USB bus.
--- Bob Weir  wrote:
> Kan wrote about the poor reliability of 50 pin
> connectors in
> "Mobile Racks" and suggested that USB2 may be a
> better route for
> disk backup.
> 
> I would not expect such a connector to be good for
> more than a
> few hundred insertions, especially with only the
> thinnest
> possible (lowest cost) gold plating applied for
> corrosion
> proofing. I do not know of a removable disk tray
> that has
> properly floating connectors (to remove strain and
> misalignment)
> plus the thick hard gold plating which is good for a
> few thousand
> insertions. I hope that USB connectors are of the
> higher quality
> needed for frequent use!
> 
> I ensured that the socket portion of my two trays
> had enough free
> movement and only swap/pull my main and backup trays
> when I have
> a boot failure or system change. I have had no
> contact problem
> in 18 months of use. These two (with fan) trays
> were
> replacements for two original trays that had no
> fans. Without
> fans, tray enclosures can introduce larger
> temperature excursions
> of the connectors and higher hard disk operating
> temperatures,
> both of which increase the likelihood of faults.
> 
> XXCOPY's ability to clone a bootable and "swappable"
> (98 & ME)
> hard disk is better than RESTORE, or partial, or
> most proprietary
> backups. As I see it, until we have a BIOS enabled
> USB2 port
> (Instead of the B drive perhaps), I will need to
> boot into an OS
> which enables USB2 before any recovery using a
> backup hard disk
> held in a USB2 enclosure is possible.
> I'm not averse to fitting an extra bootable fixed
> hard disk with
> enough of an OS on it to run a full restore (after
> changing the
> BIOS start up sequence), but cloning two W9x drives
> was so easy!
> 
> regards,
> 
> Bob Weir
> 
> 


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