Re: Backup--OT

[Bill Troop billtroop@xxxxxxxx]

That is a great starting point. What we don't know is how well any of
these systems will work upon testing. There is little demand for laptops
running RAID 1, though there is some, and there must be forums where such
concerns are addressed (probably by movie people for whom it is a hot
issue). Several years ago, at least 15, there was a ruggedized laptop
manufacturer who advertised a system with built-in RAID 1. Remember that
in those days, laptop drives were even less reliable than now, and
I thought it made a lot of sense. I talked to this manufacturer
and asked how many he had sold. 'Guess,' he said. I guessed various
figures in the thousands and hundreds. 'Not even close,' he said. Well,
how many then? 'None,' was the laconic reply.


There's a video


https://www.youtube.com/watch?v=cW8Czra3SBA; eudora="autourl">
https://www.youtube.com/watch?v=cW8Czra3SBA


which shows that booting an iMac with internal drive takes 38 seconds
while booting from Thunderbolt SSD takes only 12.


But the test we are interested in is boot time for the identical SSD,
used built-in and via Thunderbolt.


It has been demonstrated (by LaCie and Intel when Tbolt came out) that it
requires four or five SSDs operating in striped mode (RAID 0-ish - - the
fastest of all posible disk modes) to saturate Tbolt.


But everything depends!


One of the nicest things about booting from an external on a Mac is that
the external will work on so many systems . . . .


At 21/04/2014 07:40, you wrote:

> High-end gear from Apple and HP
> (e.g. HP ZBook 15 Mobile Workstation) have Thunderbolt ports, couple that
> with a Thunderbolt RAID device
> (http://www.g-technology.com/products/g-raid-thunderbolt; eudora="autourl">
> http://www.g-technology.com/products/g-raid-thunderbolt), then you
> will have a fast solution (at a very high price, though).
>
> Best regards,
>
> Kari Eveli
> LEXITEC Book Publishing (Finland)
> lexitec@xxxxxxxx
>
> *** Lexitec Online ***
> Lexitec in English:
> http://www.lexitec.fi/english.html; eudora="autourl">
> http://www.lexitec.fi/english.html
> Home page in Finnish:
> http://www.lexitec.fi/; eudora="autourl">
> http://www.lexitec.fi/
>
>
>
> 21.4.2014 3:18, Harry Binswanger wrote:
> > He recommends RAID. I was wondering if that wouldn't be a better
> > solution than the disk duplicator. But the RAID enclosure would have
> > to
> > connect by some means to the computer, and wouldn't that slow things
> > down?
> >
> > --Harry