building a RAID system - 8 drives - drive-net - tapes

Alvin Oga alvin at Mail.Linux-Consulting.com
Thu Oct 9 19:36:29 EDT 2003


hi ya

On Thu, 9 Oct 2003, Angel Rivera wrote:

..
> > yes.. guess it makes sense to move disks around for moving tb of data
> > like floppy-net or sneaker-net
> > 	- done that ( moving disks around ) myself once in a while 
> > 	for a quickie fix
> 
> When you have that much data, it is easier and faster to load 8 drives into 
> a box than tons of tapes.  take out the old drives and place the new ones 
> in, mount it, export it and voila-it is on-line.

yes and a "bunch of disks" (raid5) survives the loss of one dropped disk
and is relatively secure from prying eyes ....
	- ceo gets one disk
	- cfo gets one disk
	- hr gets one disk
	- eng gets one disk
	- sys admin gets one disk
 	( combine all[-1] disks together to recreate the (raid5) TB data )

	- a single (raid5) disk by itself is basically worthless

tape backups are insecure ...
	- lose a tape ( bad tape, lost tape ) and and all its data is lost
	- anybody can read the entire contents of the full backup

	( one could tar up one disk per tape, instead of tar'ing the
	( whole raid5 subsystem, to provide the
	( same functionality as a raid5 offsite disk backup

c ya
alvin

and hopefully .. the old disks are not MFM drives..
	or ata-133 in a new sata system :-)

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