"Leonard Grey" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Did you determine the reason why the USB drive was not recognized in
> each case? What leads you to believe that the reason for failure was
> the fact that it was a USB drive that was being used?
That's an odd question. The failure was due to the drives being USB
drives. The drives worked when removed from the enclosure and installed
as an internal drive. These were not enclosures bought separately with
drives added...they were single units not meant to be opened, types like
the W-D MyBook.
Much USB troubleshooting was done in each case (removing UpperFilters,
LowerFilters, and so forth), but all other USB drives and peripherals
worked fine, so it seems the problem was with the USB bridge in the
enclosure in these instances.
> A USB hard drive is little more than a regular internal hard drive
> with a USB adapter. In fact, you can make your own external hard drive
> from a regular internal hard drive and an enclosure.
Well aware of that.
> As a backup destination, an external hard is no more or less secure
> than an internal hard drive or a network drive.
Depends on what you mean by secure. External is more secure in that you
can take it off-site....but that also makes it LESS secure, if someone
unauthorised takes it off-site. ;-)
External drives are more prone to run hot than internal drives, harder
to monitor using S.M.A.R.T. tools, and easier to damage due to droppage
and rough handling, potentially making an external drive a much less
secure backup. I've spent enough time helping people try to recover
data from external drives that are no longer recognized, to be wary of
them as a sole backup plan. YMMV.
>
> On 12/15/2009 11:42 PM, glee wrote:
>> Just an aside....I have assisted a number of people who used an
>> external
>> USB hard drive for backup and then suddenly could not get the USB
>> drive
>> recognized by any computer. In some cases, the drive had to be
>> removed
>> from the enclosure (not always easy to do) and installed as an
>> internal
>> drive to access the data again. In other cases, the data was just
>> gone.
>> As a result, I am leery of using USB hard drives for my only backup.
--
Glen Ventura, MS MVP Oct. 2002 - Sept. 2009
A+
http://dts-l.net/