Digital BW, The Print

For what it is worth I prefer the Raid 10.   It provides less capacity than
the Raid 5 but the Write performance is so much faster.    I use the Raid 10
as my main library and then incremental backups to other SATA drives.    I
also copy data to other drives for off site backup.

 

Paul

 

  _____  

From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of mrjimbo
Sent: Thursday, February 10, 2011 1:03 PM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: [Digital BW] Re: Anyone backing up their files online?

 

  

Just a tad more info for Raid.. For most folk here I would think that
mirroring between two drives side isthe way to go.. It is the slowest
preformer both reading and writing.. but it is redundant.. If yo udo it in a
hardwar e2 drive set up an dhav ea couple extra trays with drives you can
create an off site back up on teh week end and keep it some where else.. As
a note it's not the greatest way to go however to select huge drives for a
raid set up if you can manage a few more smaller drives to fill the gaps
your better off.
Their are many different Raid specks and probably the most popular on a home
or small business level is Raid 5 if you nee dmore room and a bit of
preformance. It would use 4 drives that would be striped and with parity..
So you can loose one drive and still retain all your data .. So typically
you want a spare on hand.. This is quite reliable and also very
fast..Remember that the systems today can read multiple drives at one time
so it significantly faster then a mirror set up which just reads one..

jimbo
----- Original Message ----- 
From: Dana Myers 
To: DigitalBlackandWhiteThePrint@yahoogroups.com
<mailto:DigitalBlackandWhiteThePrint%40yahoogroups.com>  
Cc: Mike Finley 
Sent: Thursday, February 10, 2011 12:47 PM
Subject: Re: [Digital BW] Re: Anyone backing up their files online?

On 2/10/2011 11:44 AM, Mike Finley wrote:
>
>
>
> On 10/02/2011 19:31, Dana Myers wrote:
> >
> > I would *highly* recommend using at least a RAID 0 "mirror" for back-up
> > purposes. With a single drive, any error results in lost data; the
chances
> > of losing data are substantially less.
> >
> > Dana
> >
> NO ... RAID 1
>
> RAID 0 does not mirror, and puts your data at risk from failure of
> EITHER drive, as each holds only half your data.
>
Doh. Of course I meant *RAID 1* mirror. It's an off-by-one error :-)
(I knew what I *meant* to say)

Mike is completely correct - RAID 0 "striping" is done to increase
performance at the expense of reduced overall reliability.

RAID 1 substantially improves reliability at little or no cost to
performance (actually, read performance can be substantially
better, write performance slightly worse).

Personally, I strongly recommend running a RAID 1 pair as the
"system drive" in general.

Dana

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