RAID? Was: PATA hard disks, anyone?

[Grant Taylor]

On 03/28/2018 11:51 AM, David Brownlee via cctalk wrote:
> A step up from rsync can be dirvish - it uses rsync, but before each 
> backup it creates a hardlink tree of the previous backup, then rsyncs 
> over it. The net effect is you only pay the block cost of one copy of 
> unchanged files, plus an inode per copy. Can be very handy

I've used something like that with great success.  -  This is commonly 
known as "Single Instance Store".

The only down side is that there is a single copy of the file, and if 
something happens to it, the entire backup set is impacted.

This is easy to get around by periodically creating a new set backup set 
that future days are hard linked against.  (Play with the numbers to 
match your preference.)



-- 
Grant. . . .
unix || die